The Mansion on O Street

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We visited the O Museum to explore the rooms and discover the hidden doors. We spent half the day searching for hidden doors, retracing our steps, and shopping for interesting items. We found 24 doors and were done for the day! We will return to search again. This is an amazing place to explore, enjoy, and relish what the O Museum has to offer those who enter. This is a hidden gem of Washington DC. You can uncover the hidden doors if you are willing to search and keep an open mind!

— Lori Gardner

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Amazing mansion. Extremely friendly and engaging staff! If you view all the objects as a representation of a past era, the history the mansion provides is outstanding. What is really mystifying is how they provided plumbing to all the exotic bathrooms and kitchens in the mansion. Fascinating!

— Dr. Alex Cullison from Guidance Resources for Independent People GRIP

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One of the most unique experiences I have ever been to. Very cool. Definitely worth a stop, or two. My whole party had a good time.

— Holly Fatheringham - US