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

COSI is now closed

COSI Admission Information

Admission Package

Adults (13+)


COSI Members

Premium Members

Supporting Members

Buy Tickets

General Admission - Classic Exhibits & Shows $20 $15 Free Free Free
Two Day Admission Pass** $30 $20
Add a Do-It-All Ticket $15 $15
Add a Planetarium Show $5 $5 $4 $4 $4
Add a National Geographic Giant Screen Movie $5 $5 $4 $4 Free
Add Adventure $5 $5 $4 Free Free
National Geographic Movie Only (No exhibits) $8 $8 $4 $4 Free
Planetarium Show Movie Only (No exhibits) $8 $8 $4 $4 Free
Family Friday Night    What Is This? $11 $11 Movie is $3.50 Movie is $3.50 Free

*Children under 24 months are free. Youth pricing is valid for ages 2-12 years old.
**Two Day Pass good for 2 consecutive days

Family Friday Night

COSI offers extended hours and price-reduced admission on the last Friday of every month so you can visit, learn, and play late! General admission is only $11 after 5pm and includes all of COSI's Classic Exhibitions plus a movie in the National Geographic Giant Screen Theater.

Members get in free and pay only $3.50 for a movie in The National Geographic Giant Screen Theater at COSI (optional).

Available Add-Ons

Adventure - $5
Giant Screen Film - $5

$5 Youth Admission

Save $7.95 in honor of COSI's 50th Anniversary.
No coupon necessary. Offer ends March 16, 2014.

Please note: The $5 Youth Admission special does not apply to group visits. For group rates, please check here.

There is something to satisfy everyone’s appetite at COSI. The Atomic Café offers pizza, a variety of garden fresh salads and deli made sandwiches, cooked to order, grilled items, daily specials, and combo meals! Check out the Atomic Cafe Menu

This Week's Hours

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

Summer Business Hours

May 3, 2016 - Sept 5, 2016

Monday - Sunday: 10am - 5pm
Last Friday of each month: 10am - 9pm
July 1: CLOSED

On-Site Parking

The COSI-managed lots next to COSI accommodate more than 600 vehicles directly west of the building!
$5 for General Public | $4 for COSI Members
Daily downtown rate is $8. In order to get the discounted rate, please bring your ticket inside to COSI's Box Office for validation. Parking may be paid for at the box office or by credit card when exiting the parking lots.

COSI Photo Policy

COSI and the media frequently take photos/videos of visitors which may be used by COSI and/or its designees in future promotional materials in any media (such as websites, brochures, flyers, blogs, and social media sites). If you are photographed, the photo may be used without your prior consent and without compensation. If you do not want your image used, please avoid the photographer or inform them that you do not wish to be photographed.

COSI Code of Conduct

COSI is a participatory, hands-on environment. We invite you to use the exhibits actively, but with respect. Children 12 years and under must be accompanied by a responsible adult. Disruptive behavior, vandalism, misuse of exhibits or the building will not be tolerated. Weapons of any kind are not permitted on our property. If you present a danger to other guests or to COSI, you may be removed from the premises without warning or refund. In the event of an emergency, please follow all prompts and directions provided by COSI team members and emergency personnel.