The Great Smoky Mountains is in the Appalachian Mountains and is America's most visited National Park. In large part due to the highly varied elevations in the park, there is a wide range of plant and animal species. There are over 800 miles of trails, and a large section of the Appalachian Trail in the park as well as 80 historic structures. There is no fee to enter the park, but camping is $14-23 per night. Great Smoky Mountains National Park is open 24 hours a day, 365 days a year. However some secondary roads, campgrounds, and other visitor facilities close in winter. For seasonal info see: https://www.nps.gov/grsm/planyourvisit/hours.htm Accessibility: The Interagency Access Pass for free or discounted admission for US Citizens or permanent residents with permanent disabilities is accepted here. The Sugarlands and Oconaluftee Visitor Centers are wheelchair/mobility equipment accessible and have wheelchair-accessible bathrooms and a drinking fountain. The Mountain Farm Museum and Mingus Mill have packed gravel paths so assistance may be needed for those with mobility challenges. There are wheelchair accessible Ranger-led programs listed in the Smokies Guide newspaper. Temporary disabled parking permits are available at the visitor centers. The most wheelchair accessible amphitheater is at Cade’s Cove and it also has accessible restrooms. Three campgrounds have wheelchair-accessible campsites. Service animals must be on-leash throughout the park. Additional accessible trails and facilities information can be found here: https://www.nps.gov/grsm/planyourvisit/accessibility.htm