10 Oldest Buildings in Washington, DC

10. The Willard Hotel Year Built: 1847 Location: 1401 Pennsylvania Avenue NW Area: over 22,000 sq.ft Current Usage: Hotel

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9. U.S. Treasury Building Year Built: 1836 Location: 1500 Pennsylvania Avenue NW Area: 765 sq.m Current Usage: Government Office

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8. Decatur House Year Built: 1818 Location: 748 Jackson Pl NW Area: 0.40 hectares Current Usage: House Museum

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7. Tudor Place Year Built: 1816 Location: 1644 31st St NW Area: 2.23 hectares Current Usage: Garden, Museum, Events Place

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6. The Octagon Museum Year Built: 1801 Location: 1799 New York Ave NW Area: Unknown Current Usage: Museum

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5. Sewall-Belmont House Year Built: 1800 Location: 144 Constitution Ave NE 20002 Area: 3642 sq.m Current Usage: Events Place, House, Museum

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4. Dumbarton House Year Built: 1799 Location: 2715 Q St NW 20007 Area: 2428 sq.m Current Usage: National Headquarters of the NSCDA

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3. U.S. Capitol Year Built: 1793 Location: First St SE Area: 1.62 hectares Current Usage: Government Office

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2. The White House Year Built: 1792 Location: 1600 Pennsylvania Avenue NW Area: 7.2 hectares Current Usage: US Presidents’ Official Residence and Workplace

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1. Old Stone House Year Built: 1765 Location: 3051 M St NW Area: 0.16 hectares Current Usage: Educational center

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