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Gateway Arch

US National Historic Landmark in St. Louis, Missouri

About

The Gateway Arch is a 630-foot-tall (192 m) monument in St. Louis, Missouri, United States. Clad in stainless steel and built in the form of a weighted catenary arch, it is the world's tallest arch and Missouri's tallest accessible structure. Some sources consider it the tallest human-made monument in the Western Hemisphere. Built as a monument to the westward expansion of the United States and officially dedicated to "the American people", the Arch, commonly referred to as "The Gateway to the West", is a National Historic Landmark in Gateway Arch National Park and has become a popular tourist destination, as well as an internationally recognized symbol of St. Louis.

The Arch was designed by the Finnish-American architect Eero Saarinen in 1947. Construction began on February 12, 1963, and was completed on October 28, 1965, at an overall cost of $13 million (equivalent to $98.4 million in 2024). The monument opened to the public on June 10, 1967.

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