In the sleepy town of Gozo exists a reproduction of the entire town of Bethlehem.

These temples are among the oldest free-standing stone buildings in the world.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

A centuries-old forgotten underworld lies beneath Malta.

A hidden tunnel of bones in one of Malta's oldest churches.

The Jesus tree of Malta bears a striking resemblance to Christ on the cross.

This subterranean necropolis holds three floors of antler-dug grave caves.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

One of the largest mines in Bulgaria is now home to a vast museum more than 100 feet underground.

This rose and lavender oil distillery still operates as it did more than a century ago.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

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

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 Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

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

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

A tree seems to grow from the ocean floor on this strange strip of sand slowly being overtaken by the sea.

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This ship carrying cargo and four church bells for the Catedral Metropolitana Nossa Senhora Aparecida ran aground in 1968.

Rolling sand dunes of the Sahara... in the middle of the Atlantic Ocean.

A thriving surf community exists in relative remoteness along the former boundary between North and South Korea.