Structure built from the skulls of vanquished foes.

A Red Cross memorial museum at the site of the Niš concentration camp that operated for four eventful years during World War II.

What happens when you cross a mayor and a painter?

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

This beautifully preserved Ottoman house is steeped in history.

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

A naturally beautiful, seemingly bottomless deep blue spring.

Artists made this mosque into a marvel of Ottoman baroque architecture.

Two distorted Romanesque columns hold aloft a mine cart in honor of laborers who died during WWII.

This stone figurine was made more than 6,000 years ago and depicts a female deity of the Neolithic Vinča culture.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

A 11-foot former president stands on a Kosovo street that also bears his name.

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

This "Atomic Egg" appears on the city of Garching's coat of arms.

The unusually large seat sits atop the base of a ruined temple.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Site of one of World War I's most horrific scenes.

A swath of France so devastated by war it is still forbidden to go there.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Art and a pun, all in one.