• Seriously Cool
  • Wildest Weather
  • Tiny Giant
  • Spring Skies

Featured Offerings

7 Day Operation

May 4th - Sept 7th

Now you can visit COSI every day of the week! We are open Monday-Sunday 10am-5pm now through September 7.

Become a COSI Member

Join today for a year of FREE admission!

For less than $10 a month for a basic membership, COSI Members enjoy exclusive discounts, free year-long admission to COSI, and free admission to 350+ science centers worldwide! Join today, and you’ll support COSI’s mission to inspire the scientists, dreamers, and innovators of tomorrow.

Join Today!

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