The St.Louis Arch is the tallest monument in the U.S. today. If you are there at the right time you can watch a Cardinals game at Bush Stadium. Also it can sway up to 18 inches. The building process began In February 1963. Here are more facts about the gate way arch.
The gateway arch is 17 feet wide at the top. Also, the base alone is 54 feet wide. From the outer sides base to base its 360 feet across. The gateway arch from the ground up to the top is 63 stories high. That is the way it was made.
The arch weighs 17,246 tons. It also uses 142 stainless steel sections. The stainless steel sections were supplied by Pittsburgh-Des Moins steel company. The base is barrier in 23,570 tons of concrete. The arch costed $66,698,291 to build.
The gateway to the west is the st.louis arch's nickname. It was built to sway up to only 18 inches. It takes 20 mph to sway 1 inch. It would take a full 360 mph to sway 18 inches. It can with stand a earth quake.
In conclusion the arch is the 4th most visted landmark in the world. It's the tallest monument in the U.S. The idea of the arch was a contest. The arch can with stad a earthquake. You should consider going to it some day.