Show your valid AAA card with matching photo ID at COSI on Sundays in December 2019 for buy-one, get-one-free general admission! Journey into science at COSI – Columbus’ dynamic Center of Science and Industry. Get up close to dinosaurs in the American Museum of Natural History Dinosaur Gallery at COSI, and experience Teenage Mutant Ninja Turtles: Secrets of the Sewers, an exhibition that invites families to join these “Heroes in a Half-Shell” to hone their ninja skills (both exhibitions included with paid admission). Explore Unseen Oceans, a special exhibition from the American Museum of Natural History (add-on ticket required). Offer valid on December 1, 8, 15, 22, and 29, 2019 at the COSI Box Office only. Limit two (2) buy-one, get-one general admission ticket offer redemptions per transaction. AAA members may purchase up to two general admission tickets and get up to two free general admission tickets (equal or lesser value) per Box Office transaction. Free ticket must be equal or lesser value to paid ticket. Other restrictions may apply. Not valid with other offers.