Dominica

A lack of white sandy beaches and an overabundance of rainfall keep this mountainous island of tropical rain forests off typical Caribbean vacation itineraries—a plus for adventure seekers.

Perpetual geothermal and volcanic activity—there are seven active volcanoes—make 285-square-mile (739-square-kilometer) Dominica, located between Guadeloupe and Martinique, a paradise in progress. Venture into the rugged landscape Spiderman-style on an Extreme Dominica canyoneering tour, which takes visitors rappelling down pristine waterfalls, deep gorges, and volcanic bedrock canyons. The seven-mile round-trip hike from Titou Gorge to Boiling Lake, a vapor-covered cauldron that reaches 198º Fahrenheit (92º Celsius), is strenuous but worth the panoramic Caribbean views from atop 3,000-foot (914-meter) Morne Nicholls, as well as the chance to explore the Valley of Desolation’s brightly colored sulfur springs, mini-geysers, and bubbling mud pools. Recharge at the locally built and staffed Jungle Bay Resort & Spa. The 55-acre (22-hectare) tropical retreat features 35 secluded, hardwood cottages perched high atop posts beneath the jungle canopy.