Guanacaste is a province on the western coast of Costa Rica in Central America. A biodiverse paradise, this region is popular for its tropical rainforests, beaches, and a variety of adventurous activities, including ziplining and snorkeling.
Lake Toba is another of the island's spectacular sights - a remarkable volcanic crater set in the middle of northern Sumatra, 176km from Medan. The lake is huge (the largest in South-East Asia), occupying the caldera of a giant volcano that collapsed on itself after a massive eruption some 100,000 years ago.