Luray Caverns, near Shenandoah National Park, reveals subterranean wonders. The largest cavern in Virginia and among the most popular in the east is nine miles west of Skyline Drive on Route 22. Along with thousands of stalactites and stalagmites in chambers up to 140 feet high, the caverns highlight is the Great Stalactite Organ, billed as the world’s largest natural musical instrument. The chords resonate throughout the chamber when plungers tap the stalactites. This is a special treat for kids who’ve never gone underground. Above ground, your kids can tackle a garden maze and ogle the historic cars and carriage exhibit.