This monumental fountain has moved around the city multiple times.

A haunting collection of sunken wooden barges litters this Italian river bend.

An unusual "skull with ears" sits in the crypt of this small church tucked away at the end of a narrow alley.

These caves are home to a small church and were used to age cheese.

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

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

A small cemetery remembers the British troops who fell during the Falklands War.

Long before wi-fi, this public seat provided the wonder of being online while outdoors.

A diminutive statue that was inspired by the sculptor's own daughter.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

At this exhibit on the world of poison, venomous animals steal the show.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

The amazing wonder cabinets of a very rich Austrian archbishop.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

The resting place for anonymous victims of the Danube's dark waters.

The final resting place for the remains of 143 Habsburg royalty.

This former insane asylum now holds a pathological anatomy museum.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

A fake Transylvanian castle houses a cathedral of antlers.