In a former limestone mine, you’ll find the Louisville Mega Cavern. A unique attraction any time of the year, but especially for Lights Under Louisville, the world’s only fully-underground drive-through light show, featuring 3 million lights and 850 displays.
St. Augustine, Florida
The nation’s oldest settlement ignites its historical sights with as many as 3 million lights for a long holiday season from November 14th to January 31st. Visitors will experience a Florida-style white Christmas by foot, boat, pedicab, or horse-drawn carriage any night for free.
…Want to know more about our nation’s oldest continuously occupied settlement? Check out: 12 Great Low-Budget Places To Visit In The US