On the fifth day of our road trip across the United States, my travel buddy and I drove from Kentucky, through Indiana and Illinois, to St. Louis near the eastern edge of Missouri.

We stopped near downtown St Louis and walked to Jefferson National Expansion Memorial Park which flanks downtown St. Louis and the Mississippi River.

Gateway Arch, in the middle of the park, looks out over the Mississippi River and dominates the skyline of St. Louis. This 630-foot arch is the tallest manmade monument in the Western Hemisphere and the world’s tallest arch. It was designed in 1947 and is one of the most visited tourist attractions in the world–over 4 million visitors annually. We didn’t take the lift to the observation room at the top, but I’ll bet it’s a remarkable experience.