The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

A secret climbing tree hides along the side of a Costa Rican road.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

This wildlife refuge is home to more than 200 species of birds, as well as monkeys, lizards, and other wildlife.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.