Ancient serpentine sacrifice holder that has stood the test of time.

A Serbian church lit by chandeliers made of weapons.

A misnamed well, with a deep dark past.

Structure built from the skulls of vanquished foes.

Moss and stone turn this waterfall into an otherworldly liquid veil.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

UNESCO-protected ancient burial ground.

A stunning 18th century pharmacy and medieval chemist's collection.

Rock carving created 1,300 years ago 75 feet off the ground.

The growing stones of Romania.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

The remains of an entire Roman city can be explored in this interactive museum.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Museum dedicated to the terror regimes of Hungary.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

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

A Hungarian pharmacy museum with a box full of mummy powder.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

A pyramid in Central Europe of unknown origin.

Bohemian paradise covered in majestic forests.