Great Smoky Mountains National Park offers a diversity of plant and animal life, ancient mountains, and remnants of Southern Appalachian mountain culture. It is one of America's most visited national parks. The park offers various amenities and activities, including ranger-guided programs, biking, camping, fishing, hiking, horse riding, picnicking, and waterfalls. The park has front country and backcountry campsites, and various group tent camping areas. It is one of the largest federally protected upland landmasses east of the Mississippi River. Dominated by plant-covered, gently contoured mountains, the crest of the mountains forms the boundary between Tennessee and North Carolina, bisecting the park from northeast to southwest in an unbroken chain that rises more than 5,000-feet for over 36-miles. Great Smoky Mountains National Park is headquartered in Gatlinburg, Tenn.