Sonic Drive-In, Camby

In 1953, Shawnee, Oklahoma played host to the very first Sonic, a drive-in diner replete with carhops on roller skates who served classic burgers, fries, and tater tots. Now, more than 50 years later, Sonic is the biggest chain of drive-in restaurants in America, a title that's fueled by its signature toaster sandwiches, its foot-long, quarter-pound coney dogs, and its 398,929 possible combinations of frozen beverages. The restaurant's original dishes remain largely unchanged and silent, and new additions, such as breakfast burritos and a rotating selection of shakes, keep diners on their toes.

The restaurant doesn't just feed bellies—for more than 15 years, it's fed the minds of Oklahoman youth with academic enhancement programs, and its national Limeades for Learning program works to advance educational opportunities for youth throughout the country.