COSI is open Thursday through Sunday, 10am – 5pm. Get your tickets now!

Science boxes with five days’ worth of themed STEM activities and science experiments for kids delivered right to your front door!

COSI Connects Kits - Science boxes with five days’ worth of themed STEM activities and science experiments for kids delivered right to your front door!

Can I add an additional person or childcare worker on my membership?

Yes, up to two (2) Add-on Guests may be purchased and added to any membership. The Add-on Guest is unnamed, so Add-on Guests are not members but receive free admission when visiting with a named member (adult or child) whose membership features this option. An Add-on Guest can be a different person each visit, adult or a child.
One (1) Add-on Guest is included with a Premium Family Membership and two (2) Add-on Guests are included with a Ultimate Family Membership.