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. … See more

The bidding date, originally December 20, 1961, was postponed to January 22, 1962, to clarify the details of the arch construction. About … See more

Physical characteristics
Both the width and height of the arch are 630 feet (192 m). The arch is the tallest memorial in the … See more

Built as a monument to the westward expansion of the United States, the arch typifies "the pioneer spirit of the men and women who won the West, and those of a latter day to strive … See more

Inception and funding (1933–1935)
Around late 1933, civic leader Luther Ely Smith, returning to St. Louis from the George Rogers Clark National Historical Park See more

In April 1965, three million tourists were expected to visit the arch annually after completion; 619,763 tourists visited the top of the arch in its first … See more

The first act of vandalism was committed in June 1968: the vandals etched their names on various parts of the arch. In all, $10,000 was spent that year to repair damage from … See more