• Looking up at the Gateway Arch

    Jefferson

    National Expansion Memorial Missouri

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  • Due to the Industrial Rope Access Project at the Gateway Arch

    Visitors may enter the Arch at the south leg only. Tram rides to the top are still available, the observation deck at the top will have restrictions. Usual walking paths may be closed; please look for signage or a Ranger for walking directions.

How to Contact Us

Mail
Superintendent
Jeffersonson National Expansion Memorial
11 North 4th Street
St. Louis, MO 63102

Phone
Park Headquarters (314)655-1600
Fax (314)655-1639

Email

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Did You Know?

Dinosaur cartoon

On September 10, 1804 on Cedar Island, in South Dakota, William Clark discovered the fossilized remains of the ribs, backbone and teeth of a plesiosaur. Plesiosaurs were animals who lived at the same time as the dinosaurs, but swam rather than walking on land. Clark thought it was a giant fish bone! More...