COSI isn’t just for kids! COSI hosts monthly COSI After Dark, adult-only, after-hours events to let the adults have the run of the place.  This event feature exhibits, concessions and cash bar, and fun!  On Thursday, October 8, 2026, COSI is getting spooky with COSI After Dark: Halloween Tattoo Carnival. In partnership with the legendary Hell … Continue reading COSI After Dark: Fun for adults only! Halloween Tattoo Carnival – Oct 8