These natural cliffs look like they are a part of an old castle complex.

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

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.

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

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

UNESCO-protected ancient burial ground.

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

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

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 small museum built by a family that survived the Siege of Sarajevo.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

The place where World War I began.

Bridge that died in war and was resurected.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

No shoes allowed on this trail, which is designed to be experienced barefoot.

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

This collection of lurid religious statues tell the tales of a saint who stood down the devil.

A taxus-tree to which Julius Caesar reputedly tied his horse.