For over 155 years Historic Diamond Caverns has offered tours of Kentucky's most beautiful cave. Presented by state-of-the-art lighting, Diamond Caverns features intricate drapery deposits lining the halls in cascades of naturally colorful calcite. Thousands of formations decorate the cathedral-like chambers. Discover the beauty of Diamond Caverns with your family today. Located adjacent to Mammoth Cave National Park, a World Heritage Site and International Biosphere Reserve, Diamond Caverns abounds in natural beauty.