The gateway to the Midwest, also known as the St Louis Arch. Located in St Louis Missouri, this beauty overlooks the Mississippi river. Standing at 630 feet tall, it is actually the tallest man made monument in the U.S. It is a gorgeous structure, gleaming steel plates, concrete and glass stretch 63 stories and weigh over 17,246 tons. No trip to the Arch is complete without a slow trip to the top. The little cable pulled pods move at a whopping 3.4 miles per hour and the ride is very noisy and jerky. If you get to St Louis, do not miss this treasure.