COSI will reopen to COSI Members and the general public on June 3, 2021. Learn More.
COSI Science Festival
COSI Science Festival

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.

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