Boasting the title of "Highest Single-Drop Waterfall in the Smokies," this hike to Rainbow Falls should top your bucket list during your next visit. Toppling over an 80' ledge, the mist from the waterfall produces a stunning rainbow visible on most sunny afternoons. Should you plan your visit during the winter, you'll be welcomed with an "impressive ice formation [built] around the falls," the NPS proclaims.