answers: The Gateway Arch
context: a structural study that would "gather data about the condition of the Arch to enable experts to develop and implement the right long-term solutions." Stain samples were taken from the west face of the Arch on October 21, 2014, to determine the best way to clean it. The cleaning will cost about $340,000. Gateway Arch The Gateway Arch is a monument in St. Louis, Missouri, United States. Clad in stainless steel and built in the form of a weighted catenary arch, it is the world's tallest arch, the tallest man-made monument in the Western Hemisphere, and Missouri's tallest accessible building. </s> specialist," replacing a law enforcement officer. The responsibilities of the specialist include risk assessment, testing the park's security system, increasing security awareness of other employees, and working with other government agencies to improve the arch's security procedures. Built as a monument to the westward expansion of the United States, the arch typifies "the pioneer spirit of the men and women who won the West, and those of a latter day to strive on other frontiers." The arch has become the iconic image of St. Louis, appearing in many parts of city culture. In 1968, three years after the monument's opening, </s> Darth Vader grotesque The Darth Vader grotesque is a limestone grotesque by Jay Hall Carpenter. It is located at the Washington National Cathedral, Northwest, Washington, D.C., United States. The Darth Vader grotesque is one of many grotesques that are part of the National Cathedral's rain control system. The grotesques deflect rainwater by bouncing it off the tops of their heads and away from the stone walls. In the 1980s, during the construction of the northwest tower, Christopher Rader won third-place in a "National Geographic World" magazine contest for children, with his drawing of "Star Wars" villain Darth Vader. The fierce
question: this question is based on the st. louis arch video . what is the nickname given to the st. louis arch