Mansion on O Street

A unique hybrid of a small private luxury hotel and a museum. Contains hundreds of rooms, a collection of 20,000 books, dozens of secret passages, a collection of John Lennon's guitars, modern art and curiosities of all stripes in every room (virtually anything of which is for sale if you're interested), frequent concerts by legends of rock and R&B, numerology evaluations, banquets, etc., your curiosity will probably find enough piquing here to justify the advance reservations for tours. It's also a luxury B&B, if you are looking for extremely eccentric accommodations in the city.

• museum

Address

2020 O St NW

Hours

By reservation only

Price

Tours: $5-50/person, rooms: $350-850

Website

omansion.com (opens in a new tab)