It helps to remember that these people are architects.............masons..............Freemasons.........like the bozos in Dan Brown's novel in DC..............The Lost Symbol...........

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   The Octagon House  
3. The Octagon House, also known as the Colonel John Tayloe III House, is located at 1799 New York Avenue, Northwest in the Foggy Bottom neighborhood of Washington, D.C. Wikipedia
5. Address: 1799 New York Ave NW, Washington, DC 20006
6. Established: 1970
7. Hours: 

   Open today · 1:00 – 4:00 pm
8. Phone: (202) 626-7439
9. Architect: William Thornton
10. Architectural styles: Federal architecture, Octagon Mode