[ Black Hills Photo Gallery - Badlands Area Attractions - Wall ] Wall is a small town with a year-round population of approximately 800 people. During the summer months, however, the town receives between 15,000 and 20,000 visitors per day. Wall is located east of the Black Hills along Interstate 90 right along the beautiful Badlands. Wall is probably most famous as being the home of Wall Drug which is touted to be the World's Most Famous Drug Store. This is a shot of Main Street looking south. Wall Drug is along the left hand side of this photo.