063 Missouri - St. Louis - Gateway Arch - Photo of construction of Arch
Gateway Arch, designed by architect Eero Saarinen who won the design competition in 1947. The stainless steel structure rises 630 feet high from a 60-foot foundation and spans 630 feet at ground level. Its classic weighted catenary curve sways 1/2" - 1" in 20 mph wind. Construction on the nation's tallest memorial began in 1961 with the "topping out" in 1965 and dedication in 1966.