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Costa Rica

Costa Rica is a great place for the solo adventurer, with a variety of activities, including white-water rafting, hiking, relaxing in hot springs or “scaring yourself silly zip lining through the forest canopy,” Schlichter said.

Its lush landscape (the name literally means “rich coast”) includes beaches, rain forest, volcanoes and diverse wildlife, including white-faced monkeys, speckled owls and toucans, Expedia notes.

The sights: Independent Traveler suggests Manuel Antonio National Park, where you can hike through the rain forest, and La Posada Private Jungle Bungalows,a lodge right outside the rainforest where you can share tales with your fellow travelers and watch a sunset on the beach. Singles Travel International also recommends Tamarindo Beach, a great spot for surfers and for rainforest zip lining. Costa Rica is also a great place to do a volunteer vacation, such as helping with turtles or teaching English, Independent Traveler said.

The cost: Hotel and airfare are up just 1.6 percent from a year ago, Expedia reports. Rooms at La Posada start at $50 a night; a two bedroom, two bath guest house starts at $200 a night. Airfare and a three-night hotel combo starts around $840, Expedia reports. A day trip to the rain forest starts at $55.

Photo: Paul Souders | The Image Bank | Getty Images