COSI is a nationally esteemed science center that has delighted Central Ohio with all things science for 55 years, inspiring interest in science, technology, engineering, and math (STEM) topics and delivering our experiential, "hands-on fun" brand of learning. As a trusted educational resource for families, schools, and community partners, COSI is an essential element of our community, engaging more than one million people annually through onsite, offsite, and online experiences.