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12/02/1963 Construction begins on the Gateway Arch in St. Louis

6:11

Brotherhood Honors Gateway Arch Builders

7:55

KETC | Living St. Louis | Monumental Reflections: The Arch

4:24

The Gateway Arch - Construction Memories

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Aerial Film of Gateway Arch FlyBy - St. Louis

The Gateway Arch is a 630-foot monument in St. Louis in the U.S. state of Missouri. It is the world's tallest arch, the tallest man-made monument in the Western Hemisphere, and Missouri's tallest accessible building. Construction of the arch itself began in February, as the first steel triangle on the south leg was eased into place.