10am - 5pm
10am - 5pm
10am - 5pm
10am - 5pm
10am - 5pm
10am - 5pm
10am - 5pm

COSI is now closed

Special Offers Just for COSI Members

  • Be The Astronaut -  Member Preview

    Be The Astronaut - Member Preview

    Saturday, May 27 or Sunday, May 28, 2017
    9am - Noon

    Be among the first to experience BE THE ASTRONAUT, COSI's newest limited time exhibition, launching Saturday, May 27, 2017.

    Experience the challenge and exhilaration of spaceflight as virtual crew members guide you through interactive missions flying spaceships, piloting landers, and driving rovers on a thrilling adventure to the Earth orbit, the Moon, Mars, Ceres, and Jupiter.

    Free for COSI Members No-cost reservation is required. Space is limited.


  • ASTC & ACM Members

    ASTC & ACM Members

    Free exhibits admission with a current ASTC membership card; 50% off exhibits admission with a current ACM membership card. Maximum of 2 adults and 4 children admitted free to COSI for reciprocal ASTC members; 50% ACM discount is valid for up to six people. Science centers within 90 miles of one another are excluded from the program unless lifted by mutual agreement. Please call ahead to verify that you are eligible for the reciprocal admission benefit.

  • Special Reciprocal Admission at the Cincinnati Museum Center

    Special Reciprocal Admission at the Cincinnati Museum Center

    Offer Ends: July 01, 2018

    As of July 1, 2016, reciprocal benefits for COSI Members at the Cincinnati Museum Center’s Duke Energy Children’s Museum (located in Cincinnati, Ohio) have temporarily changed. All COSI Members who visit the Cincinnati Museum Center’s Duke Energy Children’s Museum will receive free admission. To take advantage of this benefit, present a current COSI membership card and photo ID at the Duke Energy Children’s Museum. The admission benefit extends to two parents and up to four children under 18 living in same household OR two grandparents and up to four grandchildren under 18. For more information on visting the Duke Energy Children’s Museum, visit or call 513.287.7000. COSI Members also receive discounts on admission to special exhibitions, retail store purchases, and food purchases at the Cincinnati Museum Center. This offer is valid through July 1, 2018.

    COSI Members Save on Tickets to Vikings: Beyond the Legend
    Save on tickets to Vikings: Beyond the Legend, now at the Cincinnati Museum Center. Experience a myth-busting exhibition that has captivated millions of people around the world, as the largest collection of Viking artifacts to visit North America comes to Cincinnati. COSI Members receive the discounted Cincinnati Museum Center member rate. For more information, please visit or contact the Cincinnati Museum Center at (513) 287-7000.

    COSI Members should note that as of July 2016, the Cincinnati Museum Center’s Museum of Natural History & Science and the Cincinnati History Museum are closed for an extended period of time for renovation.

  • Columbus Member Advantage

    Columbus Member Advantage

    Offer Ends: December 31, 2017
    Show Your COSI Membership Card and Save!

    As a COSI Member, you can now enjoy Buy One, Get One Free admission to select Columbus museums and attractions through the Columbus Member Advantage program. No coupon is necessary. Simply show your valid COSI Membership card each time you visit! Columbus Member Advantage partners for 2017 include:

    · Columbus Museum of Art
    · Columbus Zoo and Aquarium
    · Franklin Park Conservatory and Botanical Gardens
    · Ohio History Center & Ohio Village
    · Wexner Center for the Arts

    Important Terms & Restrictions: Receive up to two free general admissions of equal or lesser value per visit when purchasing two regular-priced general admission tickets. Tickets must be purchased from the admissions area of the facility you are visiting. Cannot be combined with other discounts or offers. Not valid on prior purchases. No rain checks or refunds. Some restrictions may apply. Offer expires December 31, 2017 unless otherwise noted.

  • COSI Members Save $2 Off General Admission at the Newport Aquarium

    COSI Members Save $2 Off General Admission at the Newport Aquarium

    Offer Ends: September 04, 2017

    Show your valid COSI Membership card and a photo ID for $2 off general admission at the Newport Aquarium! The Newport Aquarium showcases thousands of animals from around the world in a million gallons of water. You'll be amazed at all there is to see and do, including fun and interactive activities, like touching a shark or meeting a penguin. Newport Aquarium is open to the public 365 days a year and is located only two minutes from downtown Cincinnati at Newport on the Levee. For Newport Aquarium operating hours, directions, and details, please visit


Special holiday coupons just for our Members... Member Coupons

E-Mail Membership Team

CALL: 614.228.2674
Mon-Sat, 9am - 4pm EST

Member eNews Signup
Signup and receive membership information, upcoming events, new offers just for COSI Members, and more.

This Week's Hours

10am - 5pm
10am - 5pm
10am - 5pm
10am - 5pm
10am - 5pm
10am - 9pm
10am - 5pm

COSI Newsletter