4The Gateway Arch, Missouri
Located On Washington Avenue in St. Louis, the Gateway Arch is 630 feet high. It’s the tallest accessible building in the state and also the tallest man-made monument in the entire Western Hemisphere. Designed by Eero Saarinen as “an inverted weighted catenary arch,” construction ran from 1963 to 1965.
Made of 900 tons of stainless steel, its foundations are 60 feet deep. Strong and stable, it can withstand earthquakes and high winds. It will sway as far as 1.5 inches in 50-mile per hour winds to a maximum of 1.5 feet.
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