The drive-in theater is a no-brainer. It combines three of America's favorite things: movies, cars and fatty snack foods. Yet since its boom time in the 1940s and 1950s, the number of drive-ins has been steadily declining. Like most states, South Dakota was once home to dozens of the outdoor theaters; today, only six remain, including the Starlite in Mitchell, an hour west of Sioux Falls, a drive-in that's been around since 1949. The theater closed for various periods over the years but got a remodeling in the 1990s that returned it to its mid-century glory. Show up during the summer and catch a double feature.
Tickets: $7.50 per person.