ANGUILLA Although it's still a long way from being overdeveloped, the 16-mile-long island of seemingly endless beaches is becoming more sophisticated with each season. Everyone's buzzing about the new hotels, restaurants, and "super villas" (a local specialty). Yet the Anguillans themselves have remained totally unpretentious. WHERE TO STAY The Moorish fantasy Cap Juluca (888/858-5822; www.capjuluca.com; doubles from $750) is all whitewashed, domed buildings.
MALDIVES Treasured by ancient sailors, and more recently by tourists, for its translucent waters, this archipelago off the west coast of India is now home to some of the world's most luxurious resorts. The locals believe that the color blue has healing properties—and, indeed, watching this curling surf induces a meditative trance. WHERE TO STAY The seven cottages and the spa at Soneva Gili (Lankanfushi; 949/640-1198; www.sixsenses.com; doubles from $1,645) are set on pilings in the middle of a lagoon.
ST. BART'S Half-clad Europeans join Hamptons refugees for five-star balconies and beaches, late-night hot spots, and the best shopping this side of Miami. WHERE TO STAY Designer Christian Liaigre's redo of the 37-room Le Sereno (590-590/298-300; www.lesereno.com; doubles from $728), set on Grand Cul de Sac beach, is the talk of the island.
ST.-TROPEZ The French Riviera town is once again attracting royalty of a kind—Diddy, DiCaprio—to its cafés and 15th-century alleys. As you sit over a morning pastry, watch Tropezians heading for the market, ships' stewards rushing to supply the yachts, and scooters swerving to avoid the disco stragglers. WHERE TO STAY With its hillside location and monied clientele, the 95-room Byblos St.-Tropez (33-4/94-56-68-00; www.byblos.com; doubles from $630) has been the hostelry of choice since 1967.
SEYCHELLES A thousand miles from civilization, these 115 coral and granite isles in the Indian Ocean were once thought to be the original Eden. They're now luring honeymooners with private-island resorts that offer maximum luxury while embracing the country's vibrant Creole culture. WHERE TO STAY Wildly expensive, but sublime, North Island (800/735-2478; www.north-island.com; doubles from $3,283) is a high-style nature sanctuary with just 11 villas.
VANCOUVER ISLAND Off the west coast of Canada, this windswept isle has pristine beaches surrounded by old-growth rain forests, and a buzzing food scene in its chief city, Victoria. For a true end-of-the-road experience, head to Tofino: all forest, beach, and mountains. WHERE TO STAY Cantilevered over the surf, Wickaninnish Inn (Tofino; 800/333-4604; www.wickinn.com; doubles from $260) is the place to watch romantic storms.
ALASKA At the frayed end of civilization, on the Alaska Peninsula, there are no roads and no trails, except for those carved out by moose or bears. Only the tallest peaks have names, and though the bay is called Nakalilok, the river that feeds into it is unlabeled. outfitter The simple accommodations offered by Alaska Wilderness Safari (800/211-4753; www.rodgunresources.com; seven-night safari from $4,495) are snug and dry.
COSTA RICA About the size of Switzerland, Costa Rica is home to four percent of the planet's wildlife species, and many of them are found in the Monteverde Cloud Forest Biological Reserve. From San José, you can visit a fiery volcano, hike in a cloud forest, and tackle Class Four rapids, all in one day. WHERE TO STAY Once you've done the tough stuff, enjoy some R&R at the beachfront Four Seasons Resort Costa Rica at Peninsula Papagayo (Guanacaste; 800/332-3442; www.fourseasons.com; doubles from $695).
IDAHO The northern Rockies are spectacularly scenic, with a slew of summer adventure options, from hiking to biking. Rafting on the Selway River in the Nez Perce National Forest, you'll race down stretches of thunderous white water into crystalline pools filled with rainbow trout. outfitter Perfect for couples who like roughing it, the American River Touring Association (800/323-2782; www.arta.org; five-day trip $1,680 per person) has scouted campsites all along the river. Expect campfires, roasted marshmallows, and bone-chilling ghost stories.
UMBRIA Even with its sweeping vistas and crumbling Roman ruins, Umbria doesn't get as many visitors as Tuscany. You can cross both of its regions on a Country Walkers tour. Beginning in Siena and ending in Orvieto, you'll amble through medieval towns, past vineyards, and along centuries-old paths. outfitter Leave the hotels and meals to Country Walkers (800/464-9255; www.countrywalkers.com; seven-day trip $3,348).