Louisville Mega Cavern

Explore this unique underground cavern in Louisville.

Founded by Ralph Rogers in the mid-1900s, the limestone quarry at the Louisville Mega Cavern had been mined and blasted for use in establishing roads and bridges for over 42 years. It is so big that it is referred to as a mega cavern and features 100 acres of space, remaining 58 degrees year-round. Private investors acquired the cavern in 1989 to develop part of it into a high-security commercial storage facility. This is the largest building in Kentucky. The Louisville Mega Cavern sits under 70% of the Louisville Zoo and all ten lanes of the Watterson Expressway (I-264).

Today, the Mega Cavern provides fun and entertainment for all ages. Choose from various activities such as the tram tour, bike park, ziplines, challenge bridges, and more. The Mega Tram tour is 1 hour and 10 minutes long, providing visitors with an overview of the cavern's history, mining techniques used, recycling of the limestone, and green building technology of this manufactured cavern. Every winter, the cavern transforms into "Lights Under Louisville," where guests drive their cars to enjoy 850 different light displays during the holiday season. If you're visiting Louisville, Kentucky, be sure to add the Louisville Mega Cavern to your itinerary.