Elaborate mansions built by Roma residents in Soroca to show their success after centuries of discrimination.

This 15th-century Ottoman bridge was modified to keep up with the changing course of the river Erenik.

A UNESCO-protected spiritual seat of the Old Serbian Kingdom and Empire.

The ceiling of this cavern is dripping with multicolored marble stalactites.

Christianity and Islam have clashed, yet here a Serbian Orthodox church and a mosque stand together.

A futuristic, brutalist masterpiece that is also strangely prison-like.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

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

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

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

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.

A massive cave once a secret military base is now home to thousands of bats.

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

These cascading falls resonate throughout the Bulgarian forest.

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.

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

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

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

A striking symbol of the Bulgarian capital.

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.