The 20 Best Holiday Light Displays in the US to Take Your Kids to This Year

Located at MEGA Cavern, a 17-mile-long system of underground caves, Lights Under Louisville is a sparkling drive-through light show that features more than 850 lit characters and 2 million lights installed throughout a mile of tunnels. The only underground light show in the country, the event features displays of holiday characters and scenes along the 30-minute drive.