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  <xs:element id="gnl_BuyerTypeDomain" abstract="true" name="BuyerTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_RCGVentureHoldingsLLCMember" abstract="true" name="RCGVentureHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_MultiTenantRetailPropertiesMember" abstract="true" name="MultiTenantRetailPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_SummaryOfSignificantAccountingPoliciesLineItems" abstract="true" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gnl_MortgageTypeAxis" abstract="true" name="MortgageTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="gnl_MortgageTypeDomain" abstract="true" name="MortgageTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_MortgageFirstClosingMember" abstract="true" name="MortgageFirstClosingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_MortgageSecondClosingMember" abstract="true" name="MortgageSecondClosingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_MortgageThirdClosingMember" abstract="true" name="MortgageThirdClosingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_TenantWhoExercisedRightOfFirstRefusalMember" abstract="true" name="TenantWhoExercisedRightOfFirstRefusalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_MultiTenantRetailSegmentMember" abstract="true" name="MultiTenantRetailSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionsOfRealEstateInvestments" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionsOfRealEstateInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupNetAdjustmentToFairValue" abstract="false" name="DisposalGroupNetAdjustmentToFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupLikelihoodOfTenantsMovingToOpenAndOperatingStatusPercent" abstract="false" name="DisposalGroupLikelihoodOfTenantsMovingToOpenAndOperatingStatusPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gnl_MultiTenantRetailPortfolioMember" abstract="true" name="MultiTenantRetailPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationPropertyOperating" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationPropertyOperating" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationImpairmentCharges" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationImpairmentCharges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationTransactionAndOtherCosts" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationTransactionAndOtherCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeBeforeLossGainOnDispositionsOfRealEstateInvestments" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOperatingIncomeBeforeLossGainOnDispositionsOfRealEstateInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationLossOnExtinguishmentAndModificationOfDebt" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationLossOnExtinguishmentAndModificationOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationGainLossOnDerivativeInstruments" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationGainLossOnDerivativeInstruments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_NetGainLossOnMultiTenantDispositionReceivable" abstract="false" name="NetGainLossOnMultiTenantDispositionReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_OfficePropertiesMember" abstract="true" name="OfficePropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_NumberOfPropertiesImpairmentCharges" abstract="false" name="NumberOfPropertiesImpairmentCharges" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gnl_NumberofRealEstatePropertiesHeldforSale" abstract="false" name="NumberofRealEstatePropertiesHeldforSale" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gnl_NumberOfRealEstatePropertiesSold" abstract="false" name="NumberOfRealEstatePropertiesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gnl_GainLossOnBuyerDepositsAppliedToSaleOfRealEstate" abstract="false" name="GainLossOnBuyerDepositsAppliedToSaleOfRealEstate" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_AcquiredIntangibleLeaseAssetsMember" abstract="true" name="AcquiredIntangibleLeaseAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_RealEstateInvestmentPropertyHeldForSaleAtCost" abstract="false" name="RealEstateInvestmentPropertyHeldForSaleAtCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_AccumulatedDepreciationDepletionAndAmortizationRealEstateInvestmentHeldForSale" abstract="false" name="AccumulatedDepreciationDepletionAndAmortizationRealEstateInvestmentHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_RealEstateInvestmentPropertyHeldForSaleNet" abstract="false" name="RealEstateInvestmentPropertyHeldForSaleNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_RealEstateInvestmentPropertyPrepaidExpensesAndOtherAssets" abstract="false" name="RealEstateInvestmentPropertyPrepaidExpensesAndOtherAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_RealEstateInvestmentPropertyAccumulatedAmortization" abstract="false" name="RealEstateInvestmentPropertyAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_RealEstateInvestmentPropertyHeldForSaleLiabilitiesNet" abstract="false" name="RealEstateInvestmentPropertyHeldForSaleLiabilitiesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_RealEstateInvestmentsTable" abstract="true" name="RealEstateInvestmentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="gnl_RealEstateInvestmentsLineItems" abstract="true" name="RealEstateInvestmentsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="gnl_MortgagesNetMember" abstract="true" name="MortgagesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_FinlandPropertyMember" abstract="true" name="FinlandPropertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_PenskeLogisticsMember" abstract="true" name="PenskeLogisticsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_U.S.MultiTenantMortgageLoanIMember" abstract="true" name="U.S.MultiTenantMortgageLoanIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_U.S.MultiTenantMortgageLoanIIMember" abstract="true" name="U.S.MultiTenantMortgageLoanIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_U.S.MultiTenantMortgageLoanIIIMember" abstract="true" name="U.S.MultiTenantMortgageLoanIIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_U.S.MultiTenantMortgageLoanIVMember" abstract="true" name="U.S.MultiTenantMortgageLoanIVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_U.S.MultiTenantMortgageLoanVMember" abstract="true" name="U.S.MultiTenantMortgageLoanVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2019ClassA1NetLeaseMortgageNotesMember" abstract="true" name="A2019ClassA1NetLeaseMortgageNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2019ClassA2NetLeaseMortgageNotesMember" abstract="true" name="A2019ClassA2NetLeaseMortgageNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2021ClassA1NetLeaseMortgageNotesMember" abstract="true" name="A2021ClassA1NetLeaseMortgageNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2021ClassA2NetLeaseMortgageNotesMember" abstract="true" name="A2021ClassA2NetLeaseMortgageNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2021ClassA3NetLeaseMortgageNotesMember" abstract="true" name="A2021ClassA3NetLeaseMortgageNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2021ClassA4NetLeaseMortgageNotesMember" abstract="true" name="A2021ClassA4NetLeaseMortgageNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_MortgageLoanIIIMember" abstract="true" name="MortgageLoanIIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_CMBSLoanIIMember" abstract="true" name="CMBSLoanIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_NumberOfRealEstatePropertiesEncumbered" abstract="false" name="NumberOfRealEstatePropertiesEncumbered" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gnl_LongTermDebtMaturityAfterYearFour" abstract="false" name="LongTermDebtMaturityAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_RealEstateandAccumulatedDepreciationUnencumberedAssets" abstract="false" name="RealEstateandAccumulatedDepreciationUnencumberedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_KeyBankNationalAssociationMember" abstract="true" name="KeyBankNationalAssociationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_SeniorUnsecuredMultiCurrencyRevolvingCreditFacilityMember" abstract="true" name="SeniorUnsecuredMultiCurrencyRevolvingCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_U.S.DollarLoansMember" abstract="true" name="U.S.DollarLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_August2025RevolvingCreditFacilityMember" abstract="true" name="August2025RevolvingCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_BMOMember" abstract="true" name="BMOMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_FloorBenchmarkRateMember" abstract="true" name="FloorBenchmarkRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_MutuallyExclusiveOptionAxis" abstract="true" name="MutuallyExclusiveOptionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="gnl_MutuallyExclusiveOptionDomain" abstract="true" name="MutuallyExclusiveOptionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_BelowThresholdMember" abstract="true" name="BelowThresholdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_AboveThresholdMember" abstract="true" name="AboveThresholdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption" abstract="false" name="LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_LineOfCreditFacilityMaximumAmountOfFutureBorrowingsDenominatedInForeignCurrenciesBaseAmountAddedToTotalRevolvingCommitments" abstract="false" name="LineOfCreditFacilityMaximumAmountOfFutureBorrowingsDenominatedInForeignCurrenciesBaseAmountAddedToTotalRevolvingCommitments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_LineOfCreditFacilityCommitmentFeePercentageThresholdUnusedCapacityAsPercentageOfCurrentCapacity" abstract="false" name="LineOfCreditFacilityCommitmentFeePercentageThresholdUnusedCapacityAsPercentageOfCurrentCapacity" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gnl_LineofCreditFacilityUnusedCapacityFacilityFeeMultiplier" abstract="false" name="LineofCreditFacilityUnusedCapacityFacilityFeeMultiplier" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="gnl_DebtInstrumentMaximumDistributionPercentageofFFO" abstract="false" name="DebtInstrumentMaximumDistributionPercentageofFFO" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gnl_DebtInstrumentMaximumDistributionUnderExemptionPercentageOfAFFO" abstract="false" name="DebtInstrumentMaximumDistributionUnderExemptionPercentageOfAFFO" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gnl_SeniorNotes375PercentMember" abstract="true" name="SeniorNotes375PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_SeniorNotes450PercentMember" abstract="true" name="SeniorNotes450PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_FairValueMeasurementNetReceivableMortgageFirstClosing" abstract="false" name="FairValueMeasurementNetReceivableMortgageFirstClosing" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_FairValueMeasurementNetReceivableMortgageSecondClosing" abstract="false" name="FairValueMeasurementNetReceivableMortgageSecondClosing" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_FairValueMeasurementNetReceivableMortgageThirdClosing" abstract="false" name="FairValueMeasurementNetReceivableMortgageThirdClosing" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_AgentMember" abstract="true" name="AgentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_AttheMarketProgramMember" abstract="true" name="AttheMarketProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_CommonStockValueSharesAuthorized" abstract="false" name="CommonStockValueSharesAuthorized" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_CommonStockDividendRatePerShare" abstract="false" name="CommonStockDividendRatePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="gnl_CommonStockMonthlyDividendRatePerShare" abstract="false" name="CommonStockMonthlyDividendRatePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="gnl_PreferredStockQuarterlyDividendRate" abstract="false" name="PreferredStockQuarterlyDividendRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="gnl_A2021EquityPlanMember" abstract="true" name="A2021EquityPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2025EquityPlanMember" abstract="true" name="A2025EquityPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_LongTermIncentivePlanMember" abstract="true" name="LongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_RestrictedSharePlanMember" abstract="true" name="RestrictedSharePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2023PerformanceSharesMember" abstract="true" name="A2023PerformanceSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2025PerformanceSharesMember" abstract="true" name="A2025PerformanceSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_A2026PerformanceSharesMember" abstract="true" name="A2026PerformanceSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_AdvisorMember" abstract="true" name="AdvisorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_ShareBasedPaymentArrangementTrancheFourMember" abstract="true" name="ShareBasedPaymentArrangementTrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_ShareBasedCompensationAwardTrancheFourMember" abstract="true" name="ShareBasedCompensationAwardTrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_ShareBasedCompensationArrangementByShareBasedPaymentAwardPotentialNumberOfShareUnitsToBeIssued" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPotentialNumberOfShareUnitsToBeIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="gnl_PerformanceCategoryAxis" abstract="true" name="PerformanceCategoryAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="gnl_PerformanceCategoryDomain" abstract="true" name="PerformanceCategoryDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_CompanyTotalShareholderReturnRelativeToMSCIREITIndexMember" abstract="true" name="CompanyTotalShareholderReturnRelativeToMSCIREITIndexMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_CompanyTotalShareholderReturnRelativeToCustomNetLeasePeerGroupMember" abstract="true" name="CompanyTotalShareholderReturnRelativeToCustomNetLeasePeerGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_CompanyTotalShareholderReturnMember" abstract="true" name="CompanyTotalShareholderReturnMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNetDebtToAdjustedEBITDAPercentageOfPerformanceLevel" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNetDebtToAdjustedEBITDAPercentageOfPerformanceLevel" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="gnl_ShareBasedCompensationArrangementByShareBasedPaymentAwardRelativeCompanyTotalShareholderReturnPercentageOfPerformanceLevel" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRelativeCompanyTotalShareholderReturnPercentageOfPerformanceLevel" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gnl_ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholderReturnNumberOfTargetShareUnits" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholderReturnNumberOfTargetShareUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="gnl_ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholderReturnPayoutPercentageEarned" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholderReturnPayoutPercentageEarned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="gnl_ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholderReturnNumberOfShareUnitsEarned" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholderReturnNumberOfShareUnitsEarned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="gnl_NumberOfAdditionalPropertiesSubjectToGroundLeases" abstract="false" name="NumberOfAdditionalPropertiesSubjectToGroundLeases" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gnl_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_IndustrialAndDistributionSegmentMember" abstract="true" name="IndustrialAndDistributionSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_SingleTenantRetailSegmentMember" abstract="true" name="SingleTenantRetailSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_OfficeSegmentMember" abstract="true" name="OfficeSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_RealEstateInvestingMember" abstract="true" name="RealEstateInvestingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="gnl_AcquiredIntangibleLiabilitiesGross" abstract="false" name="AcquiredIntangibleLiabilitiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="gnl_NumberOfRealEstatePropertiesAcquired" abstract="false" name="NumberOfRealEstatePropertiesAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="gnl_RealEstateAcquiredPurchasePrice" abstract="false" name="RealEstateAcquiredPurchasePrice" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
