COSI policy offers free admission for 2 adults and up to 4 children listed on a qualifying Association of Science-Technology Centers (ASTC) reciprocal membership. COSI checks IDs for reciprocal admission and strictly enforces the ASTC “90-Mile” reciprocal policy. ASTC reciprocal admission benefits do not apply to reciprocal members whose place of residence is less than 90 miles from COSI. Per ASTC policy, this distance is measured “as the crow flies”, meaning that it is based on the linear radius between your place of residency and COSI, not driving distance. COSI cannot verify memberships from reciprocal museums. Reciprocal visitors must present current membership cards and photo ID when checking in at COSI’s Box Office (General Admission line). Please note that ASTC free reciprocal admission to COSI does not include the American Museum of Natural History Dinosaur and Special Exhibition Gallery, COSI Planetarium, COSI Giant Screen Theater or the COSI Motion Simulator.
ASTC members who live outside of 90 miles in a straitline from COSI admits 2 adults and 4 children according to ATSC Web site.
If you a live closer than 90 miles you get a discount instead of free admission
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