While visiting Louisville, Kentucky, you won't want to miss MEGA ZIPS; "The World's ONLY FULLY Underground Zip Lines & Adventure Tour" featuring 6 Ziplines and 2 challenge bridges up to 2 hours of adrenaline or MEGA QUEST the ONLY FULLY underground ropes challenge course in the world! Mega QUEST is one of only twenty courses of its kind in the USA. Aerial challenge and ropes courses are the hottest new extreme sport in Europe where thousands of courses are located. For those wanting a lesser thrill, be sure to check out the MEGA TRAM a Historic Tour: Ride and never walk through a part of 17 miles of underground passageways beneath the city of Louisville. Learn about the geology, history, mining techniques, recycling, and green business technology. See where 50,000 people would have been invited to stay during the Cold War Era. The historic tram tour operates mid-January through October. If you are visiting us during the holiday season, be sure to check out Lights Under Louisville: The World's Only FULLY Underground Holiday Light Show. Drive through 1.2 miles of underground passageways beneath the city of Louisville, Kentucky as you see and hear the sights and sounds of the holiday season. Offered seasonally mid-November through December. The cavern is transformed into an underground holiday light show with more than 750 lit characters.