The Arch is the tallest monument in the U.S. at 630 feet in height. Its complex and subtle design based on a weighted catenary is unique in architecture and its structural system had never been attempted on such a large scale.
Although designed in 1947 and not built until between 1963 and 1968, its symbolic architectural expression is of such simplicity that it remains modern.
The Park Grounds that surround the Arch plays host to the annual Fair Saint Louis 4th of July Event and is covered by walkways and paths. The banks of the Mississippi run along the eastern edge of the park and gives visitors a great view of Downtown St. Louis.