The smallest of the three main U.S. Virgin Islands, St. John was an early pioneer in Caribbean eco-tourism. More than half of its 20 square miles are undeveloped — and will stay that way — as they constitute Virgin Islands National Park, created in 1956 from holdings donated by U.S. philanthropist and conservationist Laurance Rockefeller. Much of St. John’s glorious white-sand beaches, coastline and surrounding seas are also protected, either through the park or the Virgin Islands Coral Reef National Monument.

Dramatic geology, unspoiled landscapes, quiet coves and gorgeous beaches are all part of Virgin Gorda’s appeal. Along the western ridge of the plump middle is Gorda Peak National Park, whose trails deliver stunning panoramic views. At the island’s southernmost tip is its most famous landmark, the Baths. Here massive granite boulders form tidal pools, grottoes and arches, and separate the white sands of Devil’s Bay and Spring Bay beaches. Spanish Town and Virgin Gorda Yacht Harbour are laid-back centers of commercial and maritime activity.