Oct 28, 1965. The steel and concrete, 630-feet-tall Gateway Arch, designed by Eero Saarninen and built as a monument to Thomas Jefferson and the Louisiana Purchase that made American westward expansion possible, was completed in St. Louis, MO. The Arch was opened to the public in two stages: July 1967 and May 1968.
Image courtesy of Pixabay.com user “Vicariousalex,” CC0.
