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

Announcement >

reviewsread more >

We had so much fun exploring the mansion and looking for hidden doors! The themed rooms were so interesting. My fiance said it was the most fun date we've been on in ages. I loved that the owners were there to host, it felt so personal and warm.

— Corinna Richards

reviewsread more >

Our staff absolutely loved our time at the O Mansion. This was such a cool and unique place to spend our afternoon! The staff was so welcoming and friendly. I can't wait to go back and take my friends!

— Amelia Iliohan from American Farm Bureau Federation

reviewsread more >

This is a hidden DC gem. This last visit (of many) was my first with kids. They thought they would be bored, but their first step into the mansion changed that immediately. They were amazed that they could touch things and that they would be searching for hidden doors throughout the mansion. They ran around like little sleuths and they were excited every tine they found a new door. I have discovered something, new rooms, new hidden doors, every time I have come and I highly recommend this spot. I have not yet had a chance to do an event or a brunch here but I hope to in the future.

— Mindy Logar

reviewsread more >

My son and I explored the mansion for two hours. We thoroughly enjoyed our time in the mansion and would recommend it to anyone who likes sleuthing around. I wasn't sure we would find any doors, but we were excited to count nine doors before we finally made our way back to the main floor (one we didn't go through as it housed a creepy doll and led into the depths of the eves...) The contents and history of the mansion are impressive. Thank you for this hidden gem! I am so happy we stumbled upon this during our final day in the DC area!

— Tammy Ghizzoni
Local Business Enterprise
Small Business Enterprise
Our Certifications
CBENumber: LSZR30942082022
Development Zone Enterprise
Resident Owned Business