what is the tallest monument in the united states
Gateway Arch The Gateway Arch is a 630-foot (192Â m) monument in St. Louis in the U.S. state of Missouri. Clad in stainless steel and built in the form of an inverted, weighted catenary arch,[5] it is the world's tallest arch,[4] the tallest man-made monument in the Western Hemisphere,[6] and Missouri's tallest accessible building. Built as a monument to the westward expansion of the United States,[5] and officially dedicated to "the American people," it is the centerpiece of the Jefferson National Expansion Memorial and has become an internationally recognized symbol of St. Louis, as well as a popular tourist destination.
Mount Rushmore Mount Rushmore National Memorial is a sculpture carved into the granite face of Mount Rushmore, a batholith in the Black Hills in Keystone, South Dakota, United States. Sculptor Gutzon Borglum created the sculpture's design and oversaw the project's execution from 1927 to 1941 with the help of his son, Lincoln Borglum. [2][3] Mount Rushmore features 60-foot (18 m) sculptures of the heads of four United States presidents: George Washington (1732–1799), Thomas Jefferson (1743–1826), Theodore Roosevelt (1858–1919), and Abraham Lincoln (1809–1865).[4] The memorial park covers 1,278.45 acres (2.00 sq mi; 5.17 km2)[5] and is 5,725 feet (1,745 m) above sea level.[6]