The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

A 16th-century horror show built in a lovely Italian garden.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

A World War II torpedo launch station abandoned off the Polish coast.

This historic black and white monastery is one of Bulgaria's architectural jewels.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

Mysterious standing stone formations looks like a petrified forest.

The site of many battles and tragedies, including the 40 maidens who leapt into the sea.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

A collection of art from Bulgaria's time as a communist state.

Ruins of an early Roman Christian church dating back to the 4th to 5th centuries.