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The Saint Louis Gateway Arch

Door to the American West

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Located on the banks of the Mississippi River, the Gateway Arch commemorates Thomas Jefferson and symbolizes the expansion of the American frontier.
View of the St. Louis Gateway Arch by architect Eero Saarinen, seen from the Mississippi River

The St. Louis Gateway Arch by architect Eero Saarinen opened on October 28, 1965.

VisionsofAmerica/Joe Sohm
Finnish-American architect Eero Saarinen originally studied sculpture, and this influence is apparent in his design of the soaring Saint Louis Gateway Arch.

Plated with stainless steel, the arch is an inverted catenary curve that rises 630 feet high and spans 630 feet from end to end. A passenger train climbs the wall of the arch to an observation deck, which provides panoramic views to the east and west.

Designed for storm-readiness, the arch was made to sway in high winds. Deep concrete foundations, sinking 60 feet below the ground, stabilizes the enormous arch.

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