Ecosystems

A jungle cave in Peru of unknown depths, otherworldly sounds, and strange nocturnal birds that navigate by echolocation.

The small sanctuaries lie just off the beaten path near one of Bhutan's most famous attractions.

Thousands of acres of beautiful wild landscape in the Great Basin.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

The unique funeral practices of the Toraja can be seen here with graves carved into caves and hung off cliffs.

A collection of 16,000 antlers crammed beautifully into a small shed.

A network of hundreds of interconnected wineries in caves hides under the town center.

Enigmatic tombs and cave dwellings on the outskirts of a rural village.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

It took an artist 20 years to create this sprawling sculpture garden honoring the area's ancient inhabitants.

The underground sanctuary of a mysterious ancient Roman religious cult contains an exquisite traditional fresco.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.

The whimsical legacy of a Canadian artist.

Hidden dwellings in the cliffsides of North Togo used by local Moba tribes to evade 18th-century slave traders.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

Some of England's last cave dwellers lived and worked within this huge cave.

A headstone notes where the most famous of Robin Hood's legendary Merry Men is reportedly buried.