City Museum

"Housed in the former International Shoe building, the enormous 600,000 square-foot St. Louis City Museum is more of an adult-sized playground than a standard museum. Visitors are encouraged to climb on and play in the various exhibits, which include an indoor skate park, salvaged bridges, over 30 different slides, a “Tiny Train Town,” a live circus, enchanted caves and—perhaps the highlight in a museum overflowing with wonders—an exhibit called MonstroCity, which features a castle turret, an adult sized ball pit and two jets suspended high above the ground. Created by artist Bob Cassilly, the museum has a higher purpose beyond being an adult jungle gym. Built by Cassilly and his team of 20 artists, the City Museum is constructed from materials reclaimed from St. Louis and continues to have a section displaying an “ever-expanding collection of architectural relics.” Don’t miss the ten-story spiral slide that starts at the roof and takes you all the way down to the entrance of the enchanted cave." - ATLAS_OBSCURA

"Located in a former shoe factory, City Museum devotes 600,000 square feet and four levels to play for all ages. The museum was the brainchild of artist and entrepreneur Bob Cassilly—along with a crew of 20 artisans known as the Cassilly Crew—who constructed the space from objects found around the city, from construction cranes and fire trucks to church pipe organs, old airplanes, and plenty of reclaimed building materials. The result is a wonderfully weird and wacky museum that’s constantly evolving, depending on what’s been donated and collected recently. There’s a sky-high jungle gym, a rooftop Ferris wheel, an aquarium, and multi-story slides that once served as chutes for shoes. The museum has a “no map” policy to encourage exploration, but does advise visitors to bring their own flashlight—you never know what you’ll find in those dark caves."