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Celebrate Halloween weekend with a costumed journey around O Museum in The Mansion — 100+ rooms decorated for Halloween, 80+ secret doors, costume contest, and cash bar.
Daily, Now - Nov 01, 2026. Oct 23 – Nov 1, 2026; reservation times 4:00 PM – 9:00 PM
Celebrate Halloween weekend with a costumed journey around O Museum in The Mansion — over 100 rooms decorated for Halloween, with more than 80 secret doors hidden throughout. Come in costume; includes a costume contest and cash bar.
Ticket includes:
• Costume contest entry
• Full access to the entire museum, with over 80 secret doors to discover
• Decorated themed rooms and pop-up curiosities
Proceeds support O Street Museum programs. Bring your own shopping bags — everything without a heartbeat is for sale!
Advanced Online Reservations Required!
Tickets: https://www.omuseum.org/tour?id=44CC71E1-9A69-4B4C-87E6-DA8AE2729B2D&utm_source=destinationdc&utm_medium=listing
CONTACT
2020 O St. NW
Washington, DC 20036
United States
