Built on the site of the now defunct International Shoe Company in St. Louis, Missouri, the City Museum is a massive 600,000 square foot urban playground. With a ball pit, a giant slide, two dismantled airplanes, and more, this park is seriously incredible!
Look how tall this thing is!
The structure was designed by American sculptor, entrepreneur, and designer Bob Cassilly. Cassilly built his brainchild with the help of 20 other people called the Cassily Crew.
Check out the amazing structure in the video below! I need to climb this thing!