South Park City has nothing to do with Cartman, Kyle etc. It's a collection of 35 original buildings, built in the 1870s and 1880s in places like Fairplay, Alma, Como and the surrounding South Park area. All were restored and moved to this site in the late 1950s to better preserve the structures and publicize the region's history.
There's a visitor center, a drugstore, a log cabin chapel, a barbershop and a bath house. Hell, there's even a morgue in this town. a morgue barbershop and bathhouse. It's all very Deadwood .