The Louisville Mega Cavern is among the most stunning Kentucky attractions in the state.

It is comprised of man-made caverns and tunnels that span 17 miles beneath Louisville.

Originally, the caverns were used as a limestone quarry, but mining stopped in the 1970s and the place sat empty for a while before being turned into a storage facility.

Now, it is among the top spots for tourists to visit, especially traveling families.

Inside, you can learn about how the cavern works and find out about its rich history in a variety of ways.

You can go on a Mega Zips zipline tour, which is the world’s one and only zip line course that is fully underground, or opt for a Mega Tram adventure, or go on an electric bike tour.

During the holiday season, you can also enjoy a 30-minute light show in the cavern!