Once a working limestone mine, the Louisville Mega Cavern is now one of Kentucky’s most unique underground attractions. Located beneath the Louisville Zoo and Watterson Expressway, it spans over 4 million square feet and offers guided tram tours, zip lines, bike trails, and seasonal events like the dazzling “Lights Under Louisville.” Equal parts adventure park and engineering marvel, it’s a year-round destination with something for everyone.
Recommended For
- Adventure seekers and thrill lovers
- Families looking for fun, all-weather activities
- Urban explorers and history buffs
- Holiday travelers in search of festive experiences
- Environmentalists and fans of eco-engineering
History & Background
- Originally operated as Louisville Crushed Stone in the 1930s–1970s
- Used as a Cold War fallout shelter
- Purchased in 1989 and transformed into a green commercial and tourist facility
- Now home to 16+ underground businesses and tourist attractions
Fast Facts
- Size: Over 100 acres with 4 million square feet of space
- Climate: Constant 58°F with distinct dry winters and wet summers
- Eco-Friendly: Energy-saving motion sensors, heat recycling, and natural air circulation
- Location: Beneath I-264 with 4 entrances and a base elevation 25 ft above the flood wall
Tourist Attractions
- Mega Tram Tour: Guided ride through 17 miles of tunnels exploring history, geology, and green technology
- Highlights: See early cavern formations, a Cold War bunker replica, and a worm recycling room
- Mega Quest: The world’s only fully underground ropes course with aerial challenges
- Mega Zips: Zip-line through six underground routes including challenge bridges and a dual racing zip line
- Mega Bike: Ride in the largest indoor bike park in the U.S. with over 45 trails and 320,000 sq ft of riding space
Seasonal Feature: Lights Under Louisville
- Only underground holiday light show in the world
- Features 2 million+ lights and 850+ characters
- Guests can drive their own vehicles through this immersive display
Environmental & Commercial Use
- Functions as Kentucky’s largest building and recycling center
- Houses commercial businesses and eco-friendly storage facilities
- Utilizes natural air pressure systems and fan-assisted ventilation
Address & Contact
- Address: Louisville Mega Cavern, 1841 Taylor Ave, Louisville, KY 40213
- Phone: 877-614-6342
- Map: See the Map
Location Map
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