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

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Hidden gem. Have been to DC a million times and hadn't experienced this - loved it!

— Natalie Garramone - Richmond, VA

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It was a wonderful adventure with our grandson (9)who knew if the O Museum from his reading of Treasure Hunters. Success in finding hidden doors and observing some very interesting items and hotel features.

— Beth Robertson

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Would like a little hints card that says how many secret doors on each floor. Also a list of rooms on each floor. We only saw rooms on the first section moved on and fortunately people told us about several rooms we missed. Loved everything we found.

— Debra siemonsma

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Our first visit here (definitely not the last) and absolutely was enchanted! Had so much fun discovering doors, rooms and artifacts. I would love to see a room checklist given to guests at the beginning just to check them off and see what we missed/how many rooms we actually found, so I could go hunting more the next time!

— Renee Gibson
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