This is perhaps the most popular mountain in the Great Smoky Mountains National Park and has no less than five very different trails to choose from. So you want waterfalls? Try the Rainbow Falls Trail or the Trillium Gap Trail. Want to get away from it all? Take the lonely Bullhead Trail. Want to meet other hikers? That would be the Alum Cave trail, the most popular in the park. Want elevation? Then it's The Boulevard Trail, which never drops below 5,500 feet (1,676 meters). The same trails can have dramatically different attractions in different seasons, as leafy scenes turn into vistas when leaves fall from the trees. Get all the details from the Great Smoky Mountains National Park.