Nicaragua’s 19 volcanoes make for a fascinating tour. Towering above Managua, symmetrical Momotombo is the “prettiest.” Visitors can drive right up to Masaya’s rim and peer into the Santiago Crater, called “the mouth of hell” by the conquistadors. Cerro Negro last erupted in 1999, creating a bleak, black post-apocalyptic surface that thrill-seekers can whiz down on boards or sleds.
Between July and December, the Refugio de Vida Silvestre La Flor becomes a nesting sanctuary for 30,000 female Olive Ridley and highly endangered leatherback turtles. Visitors can watch tiny baby turtles make a run for the water.