The gateway arch is the tallest human-made monument in the USA: 630 feet (190 meters) equals 63 stories.
You can reach the top of the arc by a cable tram – several little tram-cars can host five persons each. We crowded in this claustrophobic car, watching it rise to the top of the arch. It takes 4 minutes to reach the top and only 3 minutes to get back to the ground.

There are wide and short windows on the top of the arc, enabling a great view of the city and the Mississippi River.
There is a new free museum down at the ground. It tells the story of the arch, the history of Saint Louis, and the expeditions of the west.
It is a Must-Visit place in St, Louis, as it's almost the only unique attraction around.
The entrance is right next to the Old Courthouse.