The St. Louis City Museum is a crazy place housed in an old shoe factory and warehouse in the former garment district of St. Louis. The vision of Bob Cassilly who purchase the building in '86 and and began working on a place for kids and adults to play and explore together. It's bills itself as an "eclectic mixture of children's playground, funhouse, surrealistic pavilion, and architectural marvel. With it's many floors that house tunnels, cage tunnels, memorabilia and architectural artifacts of now gone historic buildings of St. Louis. The highlight is the rooftop playground with a bus as if it's teetering over the edge, and big slide and ferris wheel. It's great fun and everywhere you turn there's a something to discover.