The St. Louis Arch


The Gateway Arch is a 630-foot-high monument in St. Louis, in the U.S. state of Missouri. Clad in stainless steel and built in the form of a flattened catenary arch, it is the tallest man-made monument in the Western Hemisphere, Missouri's tallest accessible building, and the world's tallest arch. This would make a great place to visit if you looking for an attraction in the state of Missouri.