Completion time:196565438+1October 28th.

Construction cost:130,000 USD.

Investor: St. Louis City Government, USA.

Designer: Sarion

Purpose of construction: Monument

English name: Gateway Arch

Nickname: the gateway to the west; Sarnan arch; It is also the St. Louis Arch leading to the western United States. St. Louis Arch is in Missouri, and passing through it means entering the western United States. When the United States was still a British colony, immigrants marched to the west, conquered remote areas and found a way to make a living. St Louis was the only way for these indomitable pioneers to move westward. They once called St. Louis "the gateway to the West". The arched arch in St. Louis was built in memory of them.

Completed on 1965. The arch is as high as 192 meters, and people can see its majestic posture from a few miles away. Arches are made of steel plates, like a rainbow flying across the earth. Where the sun shines, it is so dazzling, and the part covered by the shadow is so majestic and intense. Anyone who has seen the curved arch of St. Louis with his own eyes will be deeply impressed by its spectacular image. Today's "Grand Arch" is a landmark building in the United States, which is higher than the Washington Monument. According to the design requirements, the normal swing range of the vault can be within 46 cm, but according to scientists' calculations, even if the "big arch" encounters a strong wind of 80 kilometers per hour, the swing range is only 5 cm. Because the whole arch is made of stainless steel, it will suffer hundreds of lightning strikes every year, which also creates the highest record of lightning strikes on super-high buildings. However, because the lightning protection system of the arch is very advanced, there is no damage or casualties anywhere so far.