Halloween is coming to Columbus early! Join us Thursday, October 10 for COSI After Dark: Unmasked! This 21+ event is back from the grave to delight guests with themed-science activities aimed at keeping spooky fun hands-on for adults, fun cocktails, and tantalizing food options for this epic party!

Be sure to wear your most fabulous, scary, creepy, funny, and elaborate costumes for the annual Halloween Costume Contest – prizes will be available for groups as well as those flying solo! Click here to view COSI's costume policy!

Single Costume
Winner: Six Months of Free Car Washes at Moo Moo Express Car Wash -AND- $200 Ticketmaster Gift Card
Runner Up: Watershed Distillery Gift Certificate -AND- $100 Visa Gift Card

Couples Costume
Winner: 1 Night Stay at the Junto Hotel -AND- $300 Cameron Mitchel Gift Card
Runner Up: $200 Columbus Association for the Performing Arts (CAPA) Gift Certificate -AND- Certificate for a class at Columbus Glass Art Center for two

Group Costume (3 or more people)
Winner: Two-Night Spooky Weekend Getaway
Runner Up: Group Bowling & Laser Tag experience at Ten Pin Bowling Alley

Get your tickets now before this scary-fun event sells out!

COSI After Dark: Unmasked event is October 10, 7pm - 10pm, doors open at 6:30pm. Tickets are $20/person in advance or $30/person at the door.

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EVENT MAP & ACTIVITIES

Hilton Columbus Downtown has partnered with COSI After Dark to bring you an overnight package that includes entry for two to COSI After Dark: Unmasked, an in-room amenity, overnight valet parking and breakfast for two at Gallerie Bistro. Click here to book your stay.