This year, in lieu of a class Christmas Party, our Adult Bible Fellowship class instead went to the First Annual Lights Under Louisville.
This past year, a very large cave system (The Mega Cavern) near the Louisville Zoo was opened to the public for tours. For the holiday season, they decorated about a one-mile course through the caverns with a lights display. For a fee per carload, you could drive through and see the lights underground.
It was really cool.