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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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Super cool and fun + unique experience. So much history and memorabilia - the most engaging and interactive museum I've ever been to. I will return, we only found 8 hidden doors

— Dawn Dickson

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Always a fun time at the O. The second time we have been there and always see something new.Would love to stay there sometime!

— Jim Finney

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This was a fabulous family adventure! Something you would not normally do on a vacation to DC. We can’t wait to return and find more we fret doors!

— Michelle Powers

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cool experience

— Alisa Lovera