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

"Unity, Creativity, Beauty."

A striking symbol of the Bulgarian capital.

Rock carving created 1,300 years ago 75 feet off the ground.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

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

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

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

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

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.

A little sculpture with a large wardrobe.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

An ancient burial ground believed to have been used for ritual sacrifice.

A 15th-century granary that played the role of futuristic slave quarters in the world of 'Star Wars.'

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Even King Tut was intrigued by the glass of the Great Sand Sea.

Ozymandias’ time-keeping temple.