A: In accordance with the changes to the Franklin County and State of Ohio mandates, COSI will no longer require guests to wear masks. We still strongly encourage our guests to make the individual decision to continue to wear a mask.

A: YES! All COSI Members and guests are required to make a reservation online in advance to visit COSI. A confirmation email will be sent indicating the reservation date chosen. Guests may enter at any time on their chosen day.

A: No. Reservations and ticket sales may not be made in person. Purchasing a membership does not guarantee a same-day visit.

A: Yes, due to restricted spaces, some COSI experiences will remain closed for the foreseeable future, including:

• National Geographic Giant Screen Theater
• Gadgets Live Show Stage
• 3D Audio interactive in the Life Exhibition Area
• Early entry on weekdays to little kidspace for Ultimate and Premium Family COSI Members will be unavailable until further notice to permit additional cleaning of this space.

The City of Columbus & LAZ owns and operates both an underground and above ground garage west of COSI. There are also a variety of other parking options including street meters, surface lots and much more all within a 10 minute walk to our building. Parking rates vary based on location and other events going on in the downtown area. Click here for more details.

A: COSI has installed a new UV-C Photohydroionization air sterilization system to the COSI building in partnership with Dublin, OH-based HVAC company Air Force One. UV-C photohydroionization uses ultraviolet light within COSI’s HVAC system to destroy germs, viruses, and bacteria. Within the HVAC system, UV-C light reacts with a catalyst and moisture from the air to produce safe, ionized hydro-peroxide that will now be in the air at COSI. That hydro-peroxide is safe for humans in the air, but not for germs and viruses.

A: COSI Memberships were extended for the amount of time that COSI was temporarily closed (from March 13, 2020 to June 3, 2021). That way on June 3, when COSI reopened, you had the same amount of time that was left on your Membership when COSI closed. This also applies to Memberships purchased during COSI’s closure. Membership expiration dates were automatically adjusted.
To check the status of your COSI Membership, please click here. Be sure to log in using the primary email address and password associated with your Member account.
As a new benefit to COSI Members, and to reduce cost and landfill waste, all COSI Memberships cards are now 100% digital and accessible through the updated COSI Mobile App! It’s free, convenient, and up-to-date.
How to get your Digital COSI Membership Card via the COSI Mobile App:

• Download the COSI App – search “COSI Science” in the Apple App Store or Google Play App Store.
• Select the "profile” icon
• Log into your COSI Member Account (using primary email address and password associated with your account)
• Select “Digital Card” on the Profile page

If you do not recall your password, or need to establish one for your account, use the “forget password” function and you’ll get an email to reset it.
If you are still having trouble accessing your Member account, please let us know at This email address is being protected from spambots. You need JavaScript enabled to view it.

A: View COSI's Hours & Events Calendar : https://cosi.org/hours-calendar

A: Yes! COSI’s Molecules Cafe, Atomic Cafe, and Science2Go! Gift shop reopened along with the COSI building.

A: We are unable to re-print tickets at COSI. We are sorry for any inconvenience.

A: Guests may arrive at any time on the date of their reservation.

A: COSI Members: Electronic or printed tickets should be in hand and ready for self-scanning as you enter COSI. Digital Membership or physical cards should be ready. To access your digital COSI Membership card, please download the COSI app and login to your account. Guests: Electronic or printed tickets should be in hand and ready for self-scanning as you enter COSI.

A: Please use COSI’s main entrance on the west side of the building (facing Dorrian Green park).

A: To minimize exchange of items between guests and the COSI Team, coupons cannot be honored at this time.