THE 5 BEST All Inclusive Hotels in Castries

There's more than one way to enjoy the spa experience in St. Lucia. One is to book a treatment at any of the luxury spas or resorts on the island. The other is to visit Sulphur Springs, inside the bowl of an extinct volcano, where you're welcome to try a volcanic mud bath or the 31°C/88°F Roman bath.

Soufriere's backdrop of the Pitons, sea and rainforest provides a picture perfect setting for a visit to this laid-back and relatively undeveloped town in the south of St. Lucia. Considering that its name is French for "sulphur," it should be no surprise to discover the wealth of hot springs and mineral baths. Other great spots to visit include Diamond Botanical Gardens, a slew of pretty beaches and the bike trails that wind through sugar plantation Anse Mamin. Rent a car to see the town.

This Gallic toehold in the Caribbean exudes a distinctly French air, enticingly spiced up by West Indian warmth. Local culture and cuisine combine both influences. The stylish isle is dominated by Mount Pelée, which destroyed the city of St Pierre in 1902. Black sand beaches and rainforests are found in the north, with yet more beautiful sands to the south. Sights include La Pagerie, birthplace of Napoleon's Empress Joséphine, and Diamond Rock, a 600-foot pinnacle that was once registered as a British warship.

There are 32 islands and cays that make up St. Vincent and the Grenadines (SVG). Nine are inhabited, including the mainland St. Vincent and the Grenadines islands: Young Island, Bequia, Mustique, Canouan, Union Island, Mayreau, Petit St Vincent and Palm Island. The stunning Tobago Cays National Marine Park is also located within SVG. This multi-island Caribbean nation offers a combination of rainforest eco-adventures, scuba diving, classic Caribbean powder-white sand beaches, luxury accommodation and yachting or sailing adventures.

Get the experience of visiting two island colonies in the same 37 square miles. Saint Maarten/Saint Martin's spicy marriage of Caribbean, French and Dutch cultures matches its physical diversity: the island is both urban and untamed, with rain forest-like landscapes, white beaches, and amazing caves and wildlife.

U.S. citizens still need to jump through a few hoops to visit Cuba, but as visitors from around the world know, this island offers some amazing opportunities for cultural exchange. Havana is a mix of old-world architecture and of-the-moment culture. Head out of the capital city to the small town of Trinidad to see more Spanish colonial architecture. It’s a UNESCO World Heritage Site and a fantastic home base for a visit to the Valley of the Sugar Mills, a pocket of land that formerly served as the centre of Cuba’s sugar industry.

Cayo Coco, an island just north of mainland Cuba, has some of the world’s most gorgeous beaches—think superfine white sand and shallow, clear water. It’s popular with European travelers seeking a sunny escape at one of the island’s beach-side resorts. Snorkeling and diving are fantastic.

Cuba's top beach destination sits on a 13-mile-long peninsula with powder soft sands lapped by waters of the Kawama Channel. Resort hotels teem along the shore that U.S. celebrities and gangsters, including Capone, discovered in the 1920s. Clubs and bars provide mojitos and merriment, after long days baking on the beach, golfing, diving or deep sea fishing. Rent a scooter or hop aboard an open-air tourist train or bus to see more of this stunning spot. Caves, keys and virgin forest add to the area's allure.

A city trapped in time, Havana captures the imagination like no other. Faded glamour meets careful colonial-era reconstruction with a backdrop of irresistible colour. Walk El Malecón, the walkway bordering the ocean; visit Old Havana and the Catedral de San Cristóbal; and listen for salsa music, open-air bazaars and parties that last all night.

Isla Mujeres offers a wide variety of tempting options for beach lovers, and is a relative bargain. Snorkel with tropical fish amid coral reefs, skim the blue waters by kayak or boat, or windsurf along the shores of soft, sandy beaches. On land, you can sunbathe, dine on seafood, dance to Latin rhythms, tour on a moped or belly up to the bar for fresh, delicious drinks.

It’s not just for spring-breakers. Cancun, with its golden beaches and perfect climate, is the premiere coastal destination in Mexico. And while there is certainly a 365-day party available for college students, resorts cater well to families and to those seeking solitude. This Yucatan paradise is also the gateway to the ruins of Tulum and Chichén Itzá.

With nine bays and 36 beaches, Huatulco is ideal for anyone who loves the sun. It's not an overdeveloped resort town, but the hotels are comfortable—even luxurious. Ecotourism is gaining in popularity, so take a break from sunbathing and try river rafting or a hike through the jungle.

A charming fishing village, Sayulita is a hidden gem with picturesque beaches, charming restaurants and great food. Unlike some other Mexican towns, tourists mingle with locals in a relaxed atmosphere, without the hustle and bustle of major touristy resorts. For those seeking more nightlife, Puerto Vallarta is a mere 30 minutes away.

Is there any possible way Las Vegas could not be on our "best nightlife" list? The only way we could possibly omit it is on a technicality—since you can do pretty much anything 24/7 in Vegas, it might be wrong to call it "nightlife."