About The Mansion & O Street Museum
With over 100 rooms and 70 secret doors, The Mansion is one of the most unique properties in the world. Conveniently located in historic Dupont Circle, within walking distance to Embassy Row and The Philips Collection — The Mansion offers world-class cuisine and an inspiring environment for corporate events, retreats, weddings, bar & bat mitzvahs, parties & private dining.

A haven for CEO’s, rock stars, celebrities, and politicians we have 23 uniquely themed guest rooms & suites; a two story Log Cabin, John Lennon Suite, Mrs. Rosa Parks room (she lived there for 10 years), a museum, ballroom, large & small sun filled conference galleries, casual & formal meeting rooms, billiards room, a hidden wine cellar and more.

Named a Washingtonian Magazine’s Hidden Gem, The Mansion has been featured in numerous television shows, books, and magazines including the Travel Channel’s “Mega Mansions”, WETA’s “Breakfast in Washington”, James Patterson’s Three Blind Mice, The John Lennon Letters by Hunter Davies, and National Geographic Traveler.