The Mansion on O Street

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This museum is a total blast! There's so much too see...leave yourself a couple hours. I plan on going again!

— Pam Flail

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Surprising and wonderful experience that exceeded our expectations. Really neat to see all of the history they've collected over the years, all while staying engaged and finding some hidden doors!

— Nico DiPinto - South Bend, IN

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This place is absolutely amazing. I'm certain we didn't find all the secrets but what we did find was great. And the collection was superb, I wanted all of it. Will definitely return every time I'm back in DC.

— James Grier - Hampton, VA