The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

The secret wartime bunker built on the platforms of an abandoned Tube station.

These mysterious religious carvings were once thought to be thousands of years old but are actually the work of modern eccentric.

A giant pineapple, a symbol of hospitality, and an amazing vacation rental option.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The topiary maze at the Habsburg hunting lodge.

Architectural monsters are devouring this palace's every door and window.

An alchemist's "magic door" stands in the middle of a Roman park.

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

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Deceased nuns were placed on stone chairs to decompose, while the surviving nuns prayed near the lifeless bodies.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

The world's only museum devoted to the wonders of fluorescence.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Suffocating dogs was a common spectacle in the fumes of this noxious cave.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Ruins of a 10th century church tucked away deep in a botanical garden.

The glowing blue Nymphaeum of Emperor Tiberius.