Former villa and estate of James Deering developed to preserve native tropical forests.

A mesmerizing wonderland of salt-encrusted tree branches and pencil roots.

A hidden beach at the end of a tunnel of mangrove trees.

A natural dome made of volcanic glass in Inyo National Forest.

These unique stepping stones hug a river's edge to take hikers on a journey through a limestone gorge.

These otherworldly limestone formations jut out from the Kansas prairie.

A grove of "candelabra redwoods" deep in California's Lost Coast.

This abandoned limestone quarry now provides visitors with multiple, breathtaking viewpoints.

A battle between nature and architecture in the Cambodian jungle.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

This 16th-century monastery has been turned into a surrealist architecture compound.

An open-air museum of 18th-century homes and churches transported from various villages in Southern Poland.

This hidden park hosts a rogue’s gallery of eccentric architectural obelisks.

A deserted hodgepodge of experimental structures designed by nearby university students.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

Eastern Canada's ocean playground.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Come for the speed, leave in love with the desert.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Home to Hollywood history and a very special salt crystal.

This unique zoo is the only place in the world where you can see all 15 species of crane.

These flying foxes dangle from the trees around the library like fuzzy black fruit.