• Looking up at the Gateway Arch


    National Expansion Memorial Missouri

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  • I-44 Ramp at Walnut St. to Close This Weekend

    The Missouri Department of Transportation will close the ramp from eastbound I-44 to Walnut this weekend. Crews will close the ramp (Exit 291B) into downtown at 9 a.m. Friday, July 25 so crews can remove the remainder of the old ramp from the Poplar St. More »

Special Programs

children learn basic military drill from buffalo soldier reenactors
Buffalo soldier reenactors with students in Museum of Westward Expansion
NPS photo

Jefferson National Expansion Memorial presents special programs and exhibits throughout the year. Some of the programs are designed specifically for school groups. Check this page often to see if programs are being offered at the time of your proposed visit to the park.

Contact the Education Department for more information on special programs.

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...