San Juan, Puerto Rico's capital, blends old and new. Founded in 1521, it was a key Spanish colonial port; El Morro still guards the harbor. Old San Juan, behind thick stone walls, keeps blue cobblestone streets, plazas, and colorful heritage buildings, and serves as the island's cultural hub. Nearby Santurce is the trendiest district, with shops, restaurants, and nightlife. Minutes away, Condado and Isla Verde offer iconic palm-lined Atlantic beaches.

Virgin Gorda is known for dramatic geology, unspoiled scenery, quiet coves, and beautiful beaches. Gorda Peak National Park offers panoramic views, while the Baths-its best-known landmark-features huge granite boulders, tidal pools, grottoes, and arches around Devil's Bay and Spring Bay. Spanish Town and Virgin Gorda Yacht Harbour are the main hubs. Visit the copper mine ruins or Little Fort National Park, and explore the boat-access-only North Sound, home to upscale resorts and watersports.

St. John, the smallest of the three main U.S. Virgin Islands, is a pioneer in Caribbean eco-tourism. Over half its 20 square miles are undeveloped, protected as Virgin Islands National Park, created in 1956 from land donated by Laurance Rockefeller. Its beaches, coast, and seas are also protected. Days center on hiking, swimming, snorkeling, and sailing. Cruz Bay is the commercial hub and ferry landing from St. Thomas. A winding road leads to quiet Coral Bay and its sheltered harbor.

Grand Turk is known for its gorgeous beaches and impossibly clear, shallow water that shades from pale to deep blue. Step off your yacht onto pearly white sand, then snorkel or dive the offshore reefs or Gibbs Cay, where you can swim with friendly stingrays. The modern cruise center offers duty-free shopping, a large Caribbean pool, and Margaritaville, while Cockburn Town's colonial architecture and the Turks and Caicos National Museum add history.

Stroll Miami's world-famous beaches and soak up its electric energy. Explore South Beach's Art Deco District, with 1930s pastel hotels and tropical motifs. In Little Havana, grab a legendary Cuban sandwich and a strong, sweet café Cubano. Or relax on 12 miles of sandy beach and watch the world go by. At night, dance salsa, unwind in a candlelit lounge, or party until sunrise.