Stunning examples of Russia's 18th-century wooden architecture.

Enchanting cave with a river crashing through the roof.

The world's only museum devoted to the wonders of fluorescence.

A massive underwater sinkhole made famous by Jacques Cousteau.

These termites have an large and deadly abode—impressive by day, dazzling by night.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A limestone wonderland of water and subterranean secrets.

White llama terraces dazzle in Peru's "other Machu Picchu."

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

Museum dedicated to the sacred leaf of the Andes.

This hotel is located on the edge of the world's largest salt flat and is made out of the only material around.

A seemingly endless landscape of pure salt stretches far across Bolivia.

What was once a unique system of urban elevators is turning into a mechanical ruin.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

An ancient forest of the Paleocene Age turned to stone.

This picturesque mansion has gone from opulent ruin to nature museum.

An explosion of natural color known as "the river that ran away from paradise."

This "floating island" plateau sits 7,671 feet above the forest floor.

Pivotal home of Nobel Prize winner Pablo Neruda.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

Visit this odd display of indigenous style in Argentine wine country.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

One of Chile's most active volcanoes is riddled with beautiful caves.