This extensive nuclear fallout shelter built from 42 school buses could house 500 people in its tunnels.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

Living inside a fearsome reptile in the Ivory Coast.

Cat art as far as the eye can see.

The burial ground of four Buganda monarchs was nearly destroyed by a devastating fire.

A strangely forgotten claimant to the much contested title of "Source of the Nile."

Five miles of underground river link lake to ocean.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

A magically clear, blue river that seems to spring from nowhere.

A cemetery and the town it served sinks beneath the sea during the volcanic birth of Mt. Vulcan.

Hundreds of wooden coffins dangle from cliffs and caves in the Philippines.

Bohol's mysterious brown hills.

A scattered trail of street art adds a pop of color to the city's stark structures.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

The Guinness Record holder for largest hedge in the world is a verdant Scottish bulwark.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

This collection of unique liquids allows visitors to wander the waters of Iceland's glaciers.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

A cave covered with bizarre stalactites of cloth.

Two thousand feline artifacts fill Malaysia's "Cat City."

This tiny island in the South China Sea is crawling with venomous sea snakes.

This Shetland Islands bus shelter may be small, but it squeezes in a couch, a desk, some art, and even an old telly.