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        <CurrentYearMinus1>33538</CurrentYearMinus1>
        <CurrentYear>32855</CurrentYear>
        <Total>155005</Total>
      </TotalLobbyingExpenditures2>
      <GrassrootsNontaxableAmount2>
        <CurrentYearMinus3>250000</CurrentYearMinus3>
        <CurrentYearMinus2>250000</CurrentYearMinus2>
        <CurrentYearMinus1>250000</CurrentYearMinus1>
        <CurrentYear>250000</CurrentYear>
        <Total>1000000</Total>
      </GrassrootsNontaxableAmount2>
      <GrassrootsCeilingAmount>1500000</GrassrootsCeilingAmount>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CollectUsedForPublicExhibition>X</CollectUsedForPublicExhibition>
      <CollectUsedForScholarResearch>X</CollectUsedForScholarResearch>
      <CollectUsedForPreservation>X</CollectUsedForPreservation>
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      <Equipment>
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        <Depreciation>7107946</Depreciation>
        <BookValue>1968481</BookValue>
      </Equipment>
      <TotalOfBookValueLandBuildings>1968481</TotalOfBookValueLandBuildings>
      <OtherAssets>
        <Description>Cash value of life insurance</Description>
        <BookValue>34675</BookValue>
      </OtherAssets>
      <OtherAssets>
        <Description>Cash Restricted for Bond Issue</Description>
        <BookValue>18237647</BookValue>
      </OtherAssets>
      <OtherAssets>
        <Description>Unamortized Bond Issue Costs</Description>
        <BookValue>353080</BookValue>
      </OtherAssets>
      <TotalBookValueOtherAssets>18625402</TotalBookValueOtherAssets>
      <FootnoteInPartXIII>X</FootnoteInPartXIII>
      <TotRevenueEtcAuditedFinclStmt>57056157</TotRevenueEtcAuditedFinclStmt>
      <NetUnrealizedGainsInvestments>-3564</NetUnrealizedGainsInvestments>
      <DonatedSrvcAndUseOfFacilities>22460</DonatedSrvcAndUseOfFacilities>
      <RevenueNotRptdF990>18896</RevenueNotRptdF990>
      <RevenueSubtotal>57037261</RevenueSubtotal>
      <RevenueNotRptdOnFinStmt>0</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>57037261</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>52773681</TotExpensesEtcAuditedFinclStmt>
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      <TotalExpensesPerForm990>52751221</TotalExpensesPerForm990>
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        <ReturnReference>Part III, Line 1a:</ReturnReference>
        <Explanation>The Museum's collections, which were acquired through purchases, contributions, and active field collecting since the Museum's inception, are not recognized as assets on the statement of financial position. Purchases of collection items are recorded as decreases in unrestricted net assets in the year in which the items are acquired. Contributed collection items are not reflected on the financial statements. Proceeeds from deaccessions or insurance recoveries are reflected as increases in the appropriate net asset classes.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <ReturnReference>Part III, Line 4:</ReturnReference>
        <Explanation>The Museum's collections are made up of approximately 1.4 million objects of scientific and historical significance that are held for educational, research, scientific, and curatorial purposes. These items are cataloged, preserved, and cared for, and activities verifying their existence and assessing their condition are performed continously. The collections are subject to both accession and de-accession policies including a policy that requires proceeds from their sales to be used to support the Museum's collections.</Explanation>
      </Form990ScheduleDPartXIII>
      <Form990ScheduleDPartXIII>
        <Identifier>Description of Uncertain Tax Positions Under FIN 48:</Identifier>
        <ReturnReference>Part X, Line 2:</ReturnReference>
        <Explanation>The Museum follows the Accounting for Uncertainty in Income Taxes accounting standard which requires the Museum to determine whether a tax position (and the related tax benefit) is more likely than not to be sustained upon examination by the applicable taxing authority, based solely on the technical merits of the position. The Museum believes that it has appropriate support for any tax positions taken, and as such, does not have any uncertain tax positions that are significant to the financial statements. The Museum's federal Return of Organization Exempt From Income Tax (Form 990) for the years ended December 31, 2009 through 2011, are subject to examination by the IRS.</Explanation>
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    </IRS990ScheduleD>
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      <MailSolicitations>X</MailSolicitations>
      <EmailSolicitations>X</EmailSolicitations>
      <PhoneSolicitations>X</PhoneSolicitations>
      <InPersonSolicitations>X</InPersonSolicitations>
      <SolicitationOfNonGovtGrants>X</SolicitationOfNonGovtGrants>
      <SolicitationOfGovtGrants>X</SolicitationOfGovtGrants>
      <SpecialFundraisingEvents>X</SpecialFundraisingEvents>
      <AgreementRefFundraising>1</AgreementRefFundraising>
      <FundraiserActivityInformation>
        <NameOfIndividual>Jennifer Henderson</NameOfIndividual>
        <AddressUS>
          <AddressLine1>822 Andrews Lane</AddressLine1>
          <City>Louisville</City>
          <State>CO</State>
          <ZIPCode>80027</ZIPCode>
        </AddressUS>
        <Activity>Grant Writer</Activity>
        <FundraiserControlOfFunds>0</FundraiserControlOfFunds>
        <GrossReceipts>0</GrossReceipts>
        <AmountRetainedByContractor>19330</AmountRetainedByContractor>
        <NetToOrganization>0</NetToOrganization>
      </FundraiserActivityInformation>
      <TotalRetainedByContractors>19330</TotalRetainedByContractors>
      <LicensedStates>CO</LicensedStates>
      <EventsInformation>
        <NameOfEvent1>Museum after Dark</NameOfEvent1>
        <GrossReceiptsEvent1>821938</GrossReceiptsEvent1>
        <CharitableContributionsEvent1>635249</CharitableContributionsEvent1>
        <GrossRevenueEvent1>186689</GrossRevenueEvent1>
        <FoodAndBeverageEvent1>49873</FoodAndBeverageEvent1>
        <OtherDirectExpensesEvent1>136816</OtherDirectExpensesEvent1>
        <GrossReceiptsTotal>821938</GrossReceiptsTotal>
        <CharitableContributionsTotal>635249</CharitableContributionsTotal>
        <GrossRevenueTotalEvents>186689</GrossRevenueTotalEvents>
        <FoodAndBeverageTotalEvents>49873</FoodAndBeverageTotalEvents>
        <OtherDirectExpensesTotalEvents>136816</OtherDirectExpensesTotalEvents>
        <DirectExpenseSummaryEvents>186689</DirectExpenseSummaryEvents>
        <NetIncomeSummary>0</NetIncomeSummary>
      </EventsInformation>
      <Form990ScheduleGPartIV>
        <Identifier>Explanation of Fundraising Payments</Identifier>
        <ReturnReference>Schedule G, Part I, Line 2b, Column (v)</ReturnReference>
        <Explanation>Grant Writing</Explanation>
      </Form990ScheduleGPartIV>
    </IRS990ScheduleG>
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      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>DMNS Foundation</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>2001 Colorado Boulevard</AddressLine1>
          <City>Denver</City>
          <State>CO</State>
          <ZIPCode>80205</ZIPCode>
        </AddressUS>
        <EINOfRecipient>841035262</EINOfRecipient>
        <IRCSection>501(c)(3)</IRCSection>
        <AmountOfCashGrant>12000</AmountOfCashGrant>
        <PurposeOfGrant>General operating support</PurposeOfGrant>
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      <TotalNbrOf501C3AndGovtGrants>1</TotalNbrOf501C3AndGovtGrants>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>Scholarships for tuition at universities in Colorado.</TypeOfGrant>
        <NumberOfRecipients>1</NumberOfRecipients>
        <AmountOfCashGrant>850</AmountOfCashGrant>
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      <Form990ScheduleIPartIII>
        <TypeOfGrant>Teacher stipends for attending educational seminars.</TypeOfGrant>
        <NumberOfRecipients>81</NumberOfRecipients>
        <AmountOfCashGrant>142732</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>Offset of bus rentals</TypeOfGrant>
        <NumberOfRecipients>1</NumberOfRecipients>
        <AmountOfCashGrant>130089</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIV>
        <Identifier>Procedure for Monitoring Grants in the U.S.:</Identifier>
        <ReturnReference>Part I, Line 2:</ReturnReference>
        <Explanation>Schedule I, Part I, Line 2: Funds expended for restricted purposes are tracked and reported by the Foundation.</Explanation>
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    </IRS990ScheduleI>
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      <CompensationSurvey>X</CompensationSurvey>
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      <SupplementalNonqualRetirePlan>0</SupplementalNonqualRetirePlan>
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      <AnyNonFixedPayments>0</AnyNonFixedPayments>
      <InitialContractException>0</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>George Sparks</NamePerson>
        <Title>President and CEO</Title>
        <BaseCompensationFilingOrg>273324</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>16000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>12500</DeferredCompFilingOrg>
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        <NontaxableBenefitsFilingOrg>686</NontaxableBenefitsFilingOrg>
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        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Edward Scholz</NamePerson>
        <Title>Treasurer, VP of Fin &amp; Bus Ops</Title>
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        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
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        <NamePerson>Bridget Coughlin</NamePerson>
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        <BonusRelatedOrgs>0</BonusRelatedOrgs>
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        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
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        <NontaxableBenefitsFilingOrg>22179</NontaxableBenefitsFilingOrg>
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        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Mary Hacking</NamePerson>
        <Title>Asst Sec VP of Visitor Exp</Title>
        <BaseCompensationFilingOrg>163203</BaseCompensationFilingOrg>
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        <BonusFilingOrg>10000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>9074</DeferredCompFilingOrg>
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        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
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        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Dave Noel</NamePerson>
        <Title>VP of Facilities &amp; Special Projects</Title>
        <BaseCompensationFilingOrg>151963</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>5000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>8250</DeferredCompFilingOrg>
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        <NontaxableBenefitsFilingOrg>14972</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>180185</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Kirk Johnson</NamePerson>
        <Title>VP of Research &amp; Collections</Title>
        <BaseCompensationFilingOrg>141040</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>7323</DeferredCompFilingOrg>
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        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>160481</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>Sandra Garcia</NamePerson>
        <Title>Former Treasurer &amp; CFO</Title>
        <BaseCompensationFilingOrg>136769</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>0</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>136769</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartIII>
        <ReturnReference>Part I, Line 4a</ReturnReference>
        <Explanation>Sandra Garcia, former Treasurer and CFO, received a payment in 2012 of $136,769 upon her severance from service in December 2011.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>Phone and Insurance</Description>
        <NumberOfContributions>1</NumberOfContributions>
        <NoncashContribsRptdF990>398866</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>Reported by donor</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <OtherNonCashContributionsTable>
        <NonCashCheckbox>X</NonCashCheckbox>
        <Description>Supplies</Description>
        <NumberOfContributions>1</NumberOfContributions>
        <NoncashContribsRptdF990>5761</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>Fair Market Value</MethodOfDeterminingRevenues>
      </OtherNonCashContributionsTable>
      <AnyPropertyThatMustBeHeld>0</AnyPropertyThatMustBeHeld>
      <ReviewProcessUnusualNCGifts>1</ReviewProcessUnusualNCGifts>
      <ThirdPartiesUsed>0</ThirdPartiesUsed>
      <Form990ScheduleMPartII>
        <Identifier>Non Reporting of Revenue:</Identifier>
        <ReturnReference>Part I, Line 33:</ReturnReference>
        <Explanation>The Museum's collections, which were acquired through purchases, contributions, and active field collecting since the Museum's inception, are not recognized as assets on the statement of financial position. Purchases of collection items are recorded as decreases in unrestricted net assets in the year in which the items are acquired. Contributed collection items are not reflected on the financial statements. Proceeds from deaccessions or insurance recoveries are reflected as increases in the appropriate net asset classes. The Museum had several accessions of donated objects in 2012, including 18 Chinese statues from a Colorado collector.</Explanation>
      </Form990ScheduleMPartII>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 11</ReturnReference>
        <Explanation>The completed Form 990 is reviewed by the Audit and Finance Committee, and subsequently by the Governing Board of the Museum prior to submission to the Internal Revenue Service.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 12c</ReturnReference>
        <Explanation>Conflict of interest disclosures are completed yearly by trustees, officers, and key employees. Potential conflicts, whether initially disclosed or subsequently discovered, are reviewed by the Nominating and Governance Committee to determine if a conflict actually exists. The Nominating and Governance Committee provides a report of conflicts and Committee decisions to the Board yearly. Trustees, officers, or directors that may have a conflict are prohibited from participating at both the Committee and/or Board level in deliberations regarding any potential or actual conflict.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 15</ReturnReference>
        <Explanation>The Compensation Committee of the Board of Trustees is responsible for evaluating the performance, compensation, and benefits of the President/CEO as well as those in a position to exercise substantial influence over the affairs of the Museum, including the officers and senior administrative staff. The Compensation Committee solicits feedback annually from the Board of Trustees and senior staff regarding the President/CEO's performance. This feedback is reviewed and discussed by the Compensation Committee in conjunction with comparable salary data. After deliberation, the Committee's recommendations are presented to the Board of Trustees Chair who informs the President/CEO of compensation and benefits for the upcoming year. The Chair reports final salary decisions to the entire Board of Trustees at the next available board meeting. The President/CEO conducts, annually, a performance review of each member of the Senior Leadership Team. Using comparable salary data and compensation adjustment guidelines reviewed by the Board of Trustees, the President/CEO determines the compensation and benefits for each member of the Senior Leadership Team. The President/CEO then presents this information to the Compensation Committee for their review and approval. Minutes are kept for each meeting of the Compensation Committee.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section C, line 19</ReturnReference>
        <Explanation>Governing documents are publicly filed with the Secretary of State and are available upon request. The conflict of interest policy is also made available upon request. Financial Statements are published in DMNS's annual report and supplied upon request.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part XII, line 2c</ReturnReference>
        <Explanation>This process has not changed from the prior year.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>DMNS Foundation</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>2001 Colorado Blvd</AddressLine1>
          <City>Denver</City>
          <State>CO</State>
          <ZIPCode>80205</ZIPCode>
        </AddressUS>
        <EIN>841035262</EIN>
        <PrimaryActivities>Support the activities of the Denver Museum of Nature and Science</PrimaryActivities>
        <LegalDomicileState>CO</LegalDomicileState>
        <ExemptCodeSection>501(c)(3)</ExemptCodeSection>
        <PublicCharityStatus>Line 7</PublicCharityStatus>
        <DirectControllingEntityNA>N/A</DirectControllingEntityNA>
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      <LoansOrGuaranteesToOtherOrg>0</LoansOrGuaranteesToOtherOrg>
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      <ExchangeOfAssets>0</ExchangeOfAssets>
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      <SharingOfFacilities>0</SharingOfFacilities>
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      <ReimbursementPaidByOtherOrg>0</ReimbursementPaidByOtherOrg>
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    </IRS990ScheduleR>
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</Return>