Louisville Mega Cavern

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Louisville is home to one of the largest caverns in the United States…so large, it has been dubbed the “MEGA” Cavern.

It was created by a massive limestone quarry—with miners blasting out a mind-boggling amount of rock for over 42 years during the middle of the 20th century. It was acquired in 1989 by private investors who saw the potential to develop a portion of the cavern into an environmentally-conscious high security commercial storage facility. For the past 17 years, a massive amount of recycled concrete, brick, block, rock and dirt were (and continue to be) off-loaded at the cavern to fill in the holes and create floors and internal roads. Construction to carve out offices and storage spaces is ongoing, making just a dent in the more than 4,000,000 square feet of space. Even though it’s underground, the Louisville MEGA Cavern is actually the largest building in the state of Kentucky—and by tonnage is the largest recycling center in the state. Now you can experience all the wonder and adventure of this unique attraction.