COSI will reopen to COSI Members on July 8, 2020 and to the general public on July 15, 2020.
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Due to restricted spaces, some COSI experiences will remain closed for the foreseeable future, including COSI After Dark. Please check back again soon for updates on the return of this COSI experience.

COSI After Dark: a 21+ Event! It's COSI without kids!

Grab your friends and start your weekend early with COSI After Dark, an evening event series exclusively for adults ages 21+. Each month showcases a different theme - from Wizard School to Dinosaurs - and each features activities, games, and experiences you can't get at any other visit to COSI. Explore the building, ride the High Wire Unicycle, and best of all, experience COSI without kids, all while enjoying craft beer and themed cocktails.


Member - $14
Groups (12 or more) - $16
Nonmember (in advance) - $20
Nonmember (at the door) - $25

No time to eat before coming? Add food to your COSI After Dark ticket. Offering a variety of small plates, guests who purchase this food ticket receive a wristband for all-you-can eat menu items. Buffet is open from 6:00-8:30.

Please note you will be required to show a state issued photo identification verifying age of 21+ to attend this event