Lapa Rios is a 930-acre private nature reserve located at the southern-most tip of the Osa Peninsula, Central America's last remaining lowland dense tropical rainforest. On the western Pacific coast of Costa Rica, it acts as a wildlife corridor to Corcovado National Park. It is home to 2.5% of the biodiversity of the whole world, probably - it is not even known exactly how many unidentified species there may be, the primary forest being so dense. Costa Rica is certainly known for its living laboratory of nature with its 850 species of birds (319 in Lapa Rios!), 200 mammal species, reptiles, trees, and plants. The Lapa Rios Reserve (all primary forest) is exclusive to registered guests, with amazing wildlife-watching from its bungalow balconies, restaurant terrace, and incredible canopy rooftop look-out gallery, and even from the paths, where you might spot monkeys, toucans, and sloths.