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#1 for meetings and events in the world — event mb
top five historic venues to explore — in the world — smithsonian.com

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A very interesting 2 hours of wondering around the O Mansion. There is plenty of stuff for everybody to see. We weren’t very successful at finding too many of the hidden doors..only 8 of 69 of the hidden doors

— Nancy Kleinman Sainsbury

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Awesome experience!

— Julia Marie - Ellicott City, MD

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What a fun and unique experience! A fun place with lots of history. We enjoyed exploring all the rooms in the mansion and looking for the secret doors. Great experience for all ages. Highly recommend if you are looking for a one of kind experience in DC.

— Stacy Cox - Raleigh, NC

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We had a really good time exploring. The Halloween themed rooms were unexpected. We did not find Tinkerbell but we did find a good number of secret doors. Such a unique museum experience!

— Amy Taylor
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