1) Brown County State Park

Nicknamed the "Little Smokies" because of the area's resemblance to the Great Smoky Mountains, Brown County encompasses nearly 16,000 acres of rugged hills, ridges and fog-shrouded ravines.

This park had an estimated 1,481,635 visits during the 2014/2015 fiscal year.

1. Brown County State Park

Source: Indiana Department of Natural Resources