One of the most accessible of the country's national parks, Great Smoky Mountains NP is by far the most visited--averaging some 10 million visitors each year (for comparison, Grand Canyon NP averages 5.5 million annually). It covers 814 square miles in Tennessee and North Carolina.The park offers a wide variety of outdoor activities for the visitor: great hiking and camping, scenic driving routes, wildlife watching, stunning photography opportunities, paddling, fishing, climbing, and streamside rambling, as well as a number of historic sites.Highlights of a visit to the park include:Climbing Clingmans DomeFabulous Vistas at Cades Cove Wildlife Watching at Roaring ForkPhotographing Grotto FallsRafting Pigeon RiverExploring Elkmont Ghost TownCamping at CataloocheePicnicking at the ChimneysFishing Little RiverSolitude of Upper Tremont RoadBiking the Loop Road