• Looking up at the Gateway Arch

    Jefferson

    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 »

Museum of Westward Expansion

Welcome to the Museum of Westward Expansion!

The Museum of Westward Expansion preserves some of the rarest artifacts from the days of Lewis and Clark. Through our exciting exhibits, you can explore the world of the American Indians and the 19th century pioneers who helped shape the history of the American West. See our Lewis and Clark Mural Photo Exhibit by clicking here.

Explore the links in the upper left column to learn about the Museum's many other exhibits and activities.

Interactive Museum Tour!

Unfortunately, in our migration to a new server, the interactive tour is not working. We hope to someday have it restored but for now you can read the content of the tour here: read the Museum Tour content.

Did You Know?

The insertion of the last piece of the Gateway Arch

The Gateway Arch at the Jefferson National Expansion Memorial was completed on October 28, 1965. To learn more about the construction of the Gateway Arch click here. More...