This house is located at 3107 Fessenden Street, Northwest. The listing says:
“One of Washington DC’s great estates, Fessenden House exemplifies the finest in Neoclassical architecture. The magnificent estate is defined by grand scale entertaining & refined living while providing a beautiful home for relaxation, recreation & contemplation. Designed by Leon Chatelain & built by Gibson Builders, the construction of Fessenden House is unsurpassed in the Washington area.”
You can see more photos here.
This 7 bed/9 full bath/5 half bath is going for a cool $22,000,000.