One of the city's more unique attractions, the 100-acre Louisville Mega Cavern, which was created out of a 19th-century limestone quarry, now houses the world's only underground zip line course.

The Wonderful Journey is a fascinating questline that takes place on Infinity Nikki's Firework Isles in Version 1.2. One crucial location that you'll end up needing to find is Gloomy Cavern - but ...