Gateway Arch
Gateway Arch, monument in St. Louis,
Missouri, that sits along the west bank
of the Mississippi River. The arch was
designed by Finnish-born American
architect Eero Saarinen in 1948 and
was constructed between 1963 and
1965. The strong, elegant shape of the
arch represents a door to the western
part of the country. The arch is 630 feet
(192 metres) tall, and the distance
between its two legs is equal to its
height.