At this 16th-century monastery in rural Bulgaria, visitors can also spend the night.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

Said to be the only museum in the world dedicated to the most classic of all blooms, the rose.

These cascading falls resonate throughout the Bulgarian forest.

Crossing a suspension bridge above a forest is the only way to reach this 12th-century monastery.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

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

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

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

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.

A striking symbol of the Bulgarian capital.

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

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.

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

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

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

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

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

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

Bridge that died in war and was resurected.