Traffic alert - please note that Washington Blvd, W. Town St, W Rich St may be closed due to the Vettes on Scioto event on Saturday August 29. Please allow extra time to arrive and park.
  • Seriously Cool
  • Wildest Weather
  • Tiny Giant
  • Summer Skies

Featured Offerings

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!

Costume Fun Run

Saturday, October 24th

Put on your best costume and head to COSI for the COSI Costume Fun & Run. The event features a 5K race and one mile Family Fun Walk, all with a COSI twist. All participants receive an event t-shirt, food and beverages at the finish line celebration, and a general admission pass to COSI.

Learn More

From the Calendar

Family Friday Night
28 Aug 2015 5:00PM - 9:00PM
COSI offers extended hours and price reduced admission to families so you can visit, learn, and play late! General admissio...
COSI After Dark - a 21+ Event - Space!
03 Sep 2015 5:30PM - 10:00PM
Take a journey into outer space. Learn about the future of space exploration and how the human body reacts to space travel...