The largest city in the U.S. Virgin Islands is a popular shopping center, home to 20,000 people, upscale shops, ecotours and underwater safaris. This former haunt of pirate ships now hosts millions of cruise passengers every year. Look beyond the boutiques and discover historic sights such as the bright red, 17th-century Fort Christian, the graceful green Legislature Building, the 1793 brick Lutheran Church and the taxing 99 steps stairway. Charlotte Amalie is easy to explore on foot.

Made up of St. Croix, St. John and St. Thomas, the laidback USVI offer sophisticated dining, turquoise waters and quaint towns. On St. Croix, Christiansted's colorful Danish Colonial buildings provide a lovely backdrop for dining or sailing. Underwater coral gardens are heaven for divers. On St. Thomas, shopping mecca Charlotte Amalie has hopping nightlife. Tranquil St. John offers quiet trails, secluded coves and lively Cruz Bay's shops and bars. Ferries and local air services link the islands.

Ecotourism is alive and kicking on St. John. There's more than enough to do on land, from watching for wildlife in the national park to hiking miles of trails or strolling sandy white beaches. Hit the water for amazing snorkeling, swimming, even underwater photography—of course. This is the Caribbean, after all.

Sailing, diving, fishing and soaking up the sun on perfect beaches is what it's all about on the 60 idyllic British Virgin Islands. Largest island Tortola, home to capital Road Town, is a 12 by three mile haven of white sand, lush green mountains, ruins and rum distilleries. Underwater caverns beckon from dramatic Virgin Gorda. Island time rules on laid-back Jost Van Dyke, where swim-up bars serve delicious rum concoctions. Pristine beaches lure visitors to beautiful coral island Anegada.

If you love the beach, but also want a little culture, you'll love Christiansted, one of St. Croix's two waterfront towns. Historic churches, charming courtyards, shaded walkways, stone arches, antique lampposts and rows of restored townhouses add to the city's appeal. Relax on a tranquil, white sand beach or float in the aquamarine water. Enjoy the many shops, boutiques, galleries, cafes and restaurants, or visit attractions like Fort Christianvaern, the Customs House and the Old Scale House.

Isn’t it romantic? The Caribbean island of St. Croix is practically the backdrop of a Hollywood love story. White sand beaches and lush rainforests set the scene for tropical bliss. Take in the historic small town charm of Christiansted and Frederiksted, sip your way through a spirited tour of the Cruzan Rum Distillery or explore the ruins of a sugar plantation. And the diving…oh, the diving. Think shipwrecks, think vibrant ocean life, think endless underwater possibilities.

The festive city of San Juan is the perfect place to experience true Puerto Rican culture. Get to know its roots by exploring the vibrant neighborhood of El Viejo San Juan (Old San Juan), which consists mostly of Spanish colonial buildings. Flesh out your self-guided history lesson with a visit to El Castillo San Felipe del Morro, a 16th century citadel that’s a UNESCO World Heritage Site. Then reward yourself with a cooling dip at Luquillo or Carolina Beach, then a tasty tour of the Bacardi rum plant.