 6 Cummins Falls, TN About halfway between Nashville and Knoxville, Cummins Falls cascades 75 feet over wide stair-stepped rocks into a deep cold-water pool. From: America's Best Swimming Holes >Most Pinned Travel Photos: Cummins Falls, TN Best Swimming, Swimming Holes, Dream Vacations, Vacation Spots, Vacation Rentals, Places To Travel, Places To See, To Infinity And Beyond, Future Travel