#5 Luray Caverns (Virginia)
The Luray Caves in Virginia’s Shenandoah Valley are the biggest and most visited caves in the eastern US, having formed some 400 million years ago. An estimated 500,000 people visit the system’s spectacular underground rock formations every year. Guided tours take you through Giant’s Hall, which is advertised as “Geology’s Hall of Fame,” and its impressive Double Column, Dream Lake, Frozen Fountain, Saracen’s Tent, and Titania’s Veil.
The Great Stalacpipe Organ, the biggest wind instrument in the world, is located here as well. Its stalactites are gently tapped by rubber mallets that are electrically controlled, transforming the three acres of rock into a music hall.
Daily tours are available from 9 a.m. to 6 p.m. Tickets cost $32 for adults and $16 for children aged 6 to 12.
