This abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

The haunting ruins of a military fortress turned astronomical observatory sit on a Sarajevo mountaintop.

The place where World War I began.

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

These warring psychedelic crags commemorate an unsuccessful military operation.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

A war-torn Olympic relic is being overtaken by graffiti and nature.

Bridge that died in war and was resurected.

A beautiful and moving memorial set on a little island in the middle of the river in Minsk.

A striking Soviet memorial commemorates the liberation of Belarus from the Nazis.

Remnants of the city's Soviet history hover over this modern fast-food outlet.

Thanks to its heroic service during WWII this Soviet castle has been turned into a monument towered over by a brutalist titan.

The world's longest nonstop reversible cable car soars through spectacular scenery to the medieval Tatev Monastery.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

She asked for a potato cellar and over the next 23 years he gave her a network of holy caves.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

A geological oddity topped with a 2,000-year-old pagan temple.

Defy gravity at this fascinating Pyrenees overlook platform.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

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

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

The rusting hulk of a Soviet warship sits on a Polish beach.