Located in St. Louis, Missouri, United States you will come across the Gateway Arch. It is America’s tallest memorial (height of 630 feet). It is also the tallest arch in the world. At its base, it is just as wide as it is tall. The construction began on February 12, 1963, and was completed on October 28, 1965. On June 10, 1967, it was opened to the public.
It was designed by Finnish-American architect Eero Saarinen in 1947. In 1987, the arch was listed as a National Historic Landmark. The cost of this monument was reported to be around $13 million which is equivalent to $190 million today.
Quick Facts: –
- The primary construction materials were steel and concrete. The outer skin consists of stainless steel.
- It is hollow to accommodate a unique tram system to take visitors to the observation deck at the top.
- Each leg of the arch has one tram with 8 capsules. Each capsule can hold 5 passengers.
- The Gateway Arch is visited by over four million visitors every year and approximately one million of them travel to the top.
- The arch is also the subject of an Oscar-nominated film.
- The interior structure houses two stairwells of 1,076 steps each for emergencies.
- Each leg at its base had had an engineering tolerance of one-64th of an inch (0.40 mm).
- Graffiti is scratched on the lower five to seven feet of the monument.
- The total weight of the arch is 43,220 pounds.