Deep in the Luray Caverns, the largest cave complex in the eastern United States, sits the largest musical instrument in the world. At first, the Great Stalacpipe Organ appears to be a normal organ. But instead of using pipes, the organ is wired to soft rubber mallets poised to gently strike stalactites of varying lengths and thicknesses. When the keyboard is played, the entire subterranean landscape becomes a musical instrument.

Take your Blue Ridge Parkway adventure underground at Luray Caverns. You can rock out to the one-of-a-kind “Great Stalacpipe Organ,” and make sure to toss some money into the wishing well and make a wish. All of the change tossed into the well goes to charity.