Due to Spring Break, we strongly encourage purchasing your tickets online prior to your visit to make your visit more pleasant.
  • Wildest Weather
  • Tiny Giant
  • Spring Skies
  • Visit COSI
  • COSI After Dark, April 2
  • Do-It-All
  • Blast April 25, 2015
  • One World, One Sky
  • Camp COSI

Featured Offerings

Backyard Science Day

Saturday, April 11

Discover the science you can find in your own backyard. Look through microscopes, learn how plants transform the landscape, and interact with some of the animals from COSIs Wild Experience. Free with COSI admission or Membership.

Presented by: The Scotts Miracle Gro Company

COSI is Open Late This Friday!

Friday, April 3 (10am-9pm)

Enjoy extended hours on Good Friday from 10am-3pm. As a reminder, COSI is closed to the public Easter Sunday, April 5. COSI will reopen on Monday, April 6 at 10am

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From the calendar