A striking symbol of the Bulgarian capital.

The remarkably well-preserved final resting place of a powerful ancient Thracian king.

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.

The second-largest Jewish temple in Bulgaria was deserted after World War II, seized by the communist government and then abandoned again.

UNESCO-protected ancient burial ground.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

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

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

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

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

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

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

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

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

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.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Two bulls enter. One leaves a champion—but neither loses its life.

A field filled with carved medieval tombstones called stećak.

An apparition of Virgin Mary in Herzegovina.

Some of the best-preserved specimens of the monumental medieval tombstones found throughout Bosnia and Herzegovina.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.