• Looking up at the Gateway Arch

    Jefferson

    National Expansion Memorial Missouri

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  • Pedestrian Access to the Gateway Arch From Downtown

    Pedestrian traffic on the Chestnut, Market St. and Pine St. bridges are closed. This leaves Walnut St. as the only point of entry to the Arch grounds from the city. If you park in the Arch garage there is access from the north end of the park. See maps. More »

Manifest Destiny

A popular idea known as "Manifest Destiny" swept America during the Nineteenth Century. This idea promoted the belief that the nation had a divine mission to spread from the Atlantic coast to the Pacific coast, opening the continent to American Settlement. James K. Polk was elected the eleventh U.S. President in 1844 because of his support for Manifest Destiny. Polk acquired the Oregon Territory from Great Britain by treaty, and most of the American Southwest, including California, New Mexico, and Arizona, by provoking a war with Mexico. By the end of Polk's administration, Manifest Destiny had been achieved.

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...