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

Structure built from the skulls of vanquished foes.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

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

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

A resort destroyed by a mysterious bombing offers visitors only its remains and the riddle behind it's demise.

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

A tiny church on a man-made island in the Adriatic.

Museum dedicated to the terror regimes of Hungary.

A typical crusty old museum this isn't.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A wellspring of natural Viagra found in Bosnia.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Where the lovelorn find a home for their sentimental keepsakes.

Island wonderland for communist autocrats.

The remains of a sunken military ship wreck visible through clear water.

Yugoslavia's biggest underground airport lies in ruins.

Each year melting snow turns these Austrian hiking trails into scuba zones.

The only gulag ever to exist in socialist Yugoslavia.

Where beer lovers can literally immerse themselves in beer.

Siberian ghost town built by gulag prisoners.

Azerbaijani ghost town, decaying after a war left it an armed forces buffer zone.

This ghost town in Belgium will lose its street art when it ceases to exist.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.