The small town of Gatlinburg, TN is the most popular entrance to Smoky Mountain National Park, which has the highest number of annual visitors compared to any other national park. The park brings millions of outdoor enthusiasts to the state each year to explore the rolling hills, flowing streams and unique culture that Tennessee has to offer. Chattanooga is famous for its white water rafting adventures and rocky rivers that kayakers and float trippers can enjoy when the water levels are in the right conditions.