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top five historic venues to explore — in the world — smithsonian.com

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It was a blast. So much cool stuff to see. We'll definitely be back.

— candice priest

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Fun and interestin

— Ana Rausch - Houston, TX

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It was so AMAZING! We found about 6 doors and most of them were found by my daughter! Everyone of my friends thanks me for finding your place, it was extraordinary, we forgot about everything, even finding the doors was not the main point for the first time, We were looking at all the stuff! Sincerely, one of my best birthdays in my life (and since 22nd I make extraordinary). They all say we will remember it.

— Kate

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First time visitor and my family was blown away by the uniqueness of this museum. Hunting for the secret doors and the "gems" on the sheet kept us engaged from the moment we stepped off the elevator on the fourth floor until we left 2:5 hours later. Having found 17 hidden doors, my family felt like real sleuths. What a treasure O Street Mansion is! We can't wait to bring our friends and come back again to explore more.

— Dawn Darr
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