The World's Largest Indoor Bike Park, Housed in a Limestone Mine

Newly opened this month is the largest indoor bike park in the world, located in Louisville, Kentucky. Consisting of 17 miles of corridors and caverns, zip lines, a rope course, and an event space, this new underground off-road bike course was designed to be enjoyed all year round. Built in an abandoned limestone mine 100 feet under Louisville, the course houses 45 trails, jump lines, pump tracks, slalom courses and more. Thanks to the distance of rock in between the course and the outdoors, the climate is temperate and mild, regardless of the weather happening 100 feet of rock above. The only one of its kind in the world, the bike course will begin renting out bikes starting April 2015, for $24 USD per person for half a day.