For Families

COSI After Dark - a 21+ Event (August 7, 2014)

It's COSI without kids! Geek out with grown-ups and explore COSI, get lost in Adventure, enjoy special themed activities, and a cash bar. At all COSI After Dark events through August 2014, investigate The International Exhibition of Sherlock Holmes for an additional fee. Timed admission tickets to The International Exhibition of Sherlock Holmes are $6 for COSI Members, $8 for nonmembers and can be purchased at the COSI Box Office on your arrival. Please note that sell-outs are possible.

This event is for adults ages 21 and over, only. Valid photo ID required.


  • Date & Time: Thursday, August 7, 2014 from 5:30 PM to 9:00 PM
  • Cost: $14 in advance, $16 at the door
  • Member Cost: $10 in advance or at the door