Washington Estates 2020 O St NW Home to over 100 rooms and 32 secret doors the Mansion is an intimate private club, luxury hotel, conference center, and museum. The Mansion combines music, art, architecture, literature and inspiration to craft an exhilarating, entertaining experience, for everyone. Open to the public on Sunday, Monday and holidays. Washington DC Estates H H Leonards Inc www.omansion.com arts andamp; brand recognition art and investment art and the office wine tasting event planning corporate event planning romance romantic venues romantic venue weddings DC brunch DC brunch in D.C. wedding venue DC public events holiday arts andamp; brand recognition art and investment art and the office wine tasting event planning corporate event planning romance romantic venues romantic venue weddings DC brunch DC brunch in D.C. wedding venue DC public events holiday Business Reviews H H Leonards Inc Testimonials