Tahiti is a veritable paradise in the South Pacific. The largest and most populous island of French Polynesia's Society Islands, Tahiti is known for its iconic overwater bungalows, crystal-clear cerulean water, and lush, tropical rainforests.

Paamiut lies on Greenland’s southwest coast, where the Labrador Sea meets a rocky, fjord-cut shoreline. Established in the 18th century as a Danish trading post and mission, the town developed around fishing and sealing, activities that continue to shape daily life.

ABERDEEN -- Scotland's third-largest city (pop. 187,000) is characterized by buildings of beautiful white granite. Set beside the North Sea, Aberdeen is both a university town and the capital of the Scottish oil boom. It is also one of Scotland's largest seaside resorts (though its appeal is confined to those who like their water well-chilled).

What sets Kaikōura apart are the extraordinary marine encounters that begin just off the shoreline. The Kaikōura Canyon, an underwater gorge that plunges to great depths close to land, creates currents rich with nutrients that attract a remarkable array of sea life year-round. Sperm whales are a common sight here and are frequently spotted on local boat tours. Dusky dolphins twist and leap in large pods, and colonies of New Zealand fur seals laze on rocky outcrops along the coast.

Nestled within the Colorado Rockies, Keystone is a popular ski resort destination west of Denver. The perfect spot for a variety of outdoor adventures, Keystone offers ample opportunity to ski, snowboard, hike, or golf.