Earth Day Celebration
Celebrate Earth Day with COSI! Explore how water moves through cities, learn about environmental career…
COSI Big Science Celebration
Join COSI for the ultimate celebration of science and discovery! The Big Science Celebration (BSC)…
COSI After Dark: Stoned Science
In April, COSI After Dark: Stoned Science transforms COSI into a cannabis culture inspired playground…
Dorrian Days
Find free family fun including giant inflatables, games, a themed activity station, a food truck, and the Dorrian Green…
Free Downtown Fitness: The Peninsula
Sundays, 10:15 am- Yoga, 11:15 am- Mat Pilates, led by 614FitClub on The Peninsula. Enjoy…
COSI After Dark: Knights at the Museum
Leave the modern world behind and step into a night bursting with 16th-century spectacle at…
COSI After Dark: Cocktails & Chemistry
Experience the ultimate fusion of flavor and innovation at COSI After Dark: Cocktails and Chemistry…
COSI After Dark: Science Rave
Kick off the new year at COSI After Dark: Science Rave, where science meets the…
Season of Celebrations
Starting Saturday, November 22, 2025, COSI will once again transform into a spectacular winter wonderland where…
Brassy Eyed Brunch with Santa
He’s making a list and checking it twice! Join us at Brass Eye this holiday…