Discover Eastern America’s largest and most popular caverns, Luray Caverns, a U.S. Natural Landmark. From well-lighted, paved walkways explore cathedral-sized rooms with ceilings 10 stories high, filled with towering stone columns, shimmering draperies and crystal-clear pools. A feature on the one-hour tours is the haunting sounds of the Great Stalacpipe Organ, the world’s largest musical instrument. This most unique one-of-a-kind instrument uses stalactites covering 3 1/2 acres of the surrounding caverns to produce tones of symphonic quality when electronically tapped by rubber-tipped mallets.