Fortified homes of highland warriors that are still in use today.

Ancient rock-hewn town that witnessed key events of Georgian history.

Unusual building appears to be haphazardly built from randomly piled bricks.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

A symbolic graveyard for the villages that perished during the Nazi invasion of Belarus.

The apartment building where JFK's assassin lived after defecting to the Soviet Union.

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

Remains of the old fortification along the Western border of the USSR, now an elaborate defense museum.

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

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

A castle perched precariously over the Crimean Sea.

This derelict superstructure was a very important warning system for the Soviet military.

This attraction was abandoned after the Chornobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Hidden in the rain-forests of Arunachal Pradesh in Northeast India lies the village of Ziro, home to the Apatanis.

The world's tallest slum.

This "floating island" plateau sits 7,671 feet above the forest floor.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

A moving memorial to the fallen and missing from WWI trenches.

Christ's blood allegedly preserved in a Belgian town.

A former ironworks that was the first UNESCO industrial site.

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

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