Climb So iLL is St. Louis’ premier indoor rock climbing facility, offering a truly unique indoor climbing experience. The gym is located just south of downtown St. Louis in the former City Hospital Power Plant building at the intersection of Interstates 44 and 55. The facility features 50+ feet world-class climbing walls for children, beginners, families, and recreational and professional athletes. In addition, the facility includes a pro shop specializing in rock climbing equipment, merchandise, and apparel.