Excerpt from the SDC wiki - entry for 1960:
Silver Dollar City opens on top of Marvel Cave. The General Store, The Doll Shop, Wilderness Church, a hotel, The Homestead Cabins, and a stagecoach ride are added to the site to accompany Marvel Cave.
The two stage coaches were purchased for $5,000 from Adventure Town in Alexandria Bay, New York. One of the coaches was made in 1888 in a small town in New Hampshire, while the other once belonged to the Vanderbilt family.