This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

Stone age urban planning.

Beautifully carved tombstones fill this unmarked graveyard, uniquely situated near the village's famous stone wine cellars.

Popular river that runs through the remote Serbian municipality of Leskovac.

A Roman monument to their own civil engineering prowess.

Curious carved stones and bird-like wings are a symbol of Serbian resilience and freedom on the site of a WWII massacre.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

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

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

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

A sinuous path among steep cliffs creates a stunning sight in southwestern Serbia.

Structure built from the skulls of vanquished foes.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

Festival of Perpetual Life and Rebirth.

Hungarian self-built castle.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

One of the largest barracks of the Austro-Hungarian monarchy's military is now an abandoned ruin.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

Hungarian mummies in beautiful painted coffins.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

A museum in the childhood house of a medical pioneer.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.