On Saturday, October 25, 2025, from 6–8 PM, CelebrateOne is hosting our First Birthday Bash, a special after-hours celebration at COSI for families with children turning ONE in 2025. The evening will feature free admission, food, professional smash cake photos, and exclusive access to the museum. Plus, the first 150 eligible families will receive a free COSI family membership for the year!
This event is a joyful way to celebrate our community’s youngest children reaching their first birthdays!
