This exquisite, alienesque piece of Soviet architecture is being threatened by modern shopping malls.

A subterranean Holocaust refuge within one of the world's longest cave systems.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

The largest park in Lviv is surrounded by a network of disused rail tracks.

A unique Soviet mosaic preserved on the facade of a shoe factory in Lviv.

The ruins of an abandoned church loom within a picturesque Ukranian village.

A maze of underground tunnels beneath one of the most beautiful forts in Serbia.

A museum dedicated to the former country.

This feat of Brutalist architecture is also known as the Three Sisters.

An abandoned monument remembering the "Pančevo Holocaust" now stands as a shadow of its former self.

A Hollywood-sign replica with a typo on a remote hillside.

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

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

The hairpin turns in this mountain road take the shape of a letter—is it a coincidence or a symbol of love?

A curious cave church carved into the face of a cliff.

A swan-like monument on Obad's Hill honors those that defended the area from German invaders during WWII.

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

On top of a resort town as old as the Bronze Age sits an incredible war memorial statue overlooking the beaches below.

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

A naturally beautiful, seemingly bottomless deep blue spring.

Climb into Albania's communist history while enjoying a spectacular ocean view.

Gigantic water vessel, permanently grounded in Southern Albania.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.