The plague quarantine island home to the alleged "Vampire of Venice."

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

Venice's "Island of the Mad."

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The only known mosaic depicting the Greek god of sleep, Hypnos.

This memorial to local World War II heroes is slowly being reclaimed by nature.

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

Former military fort and site of untold horrors during WWII, this island may become the Adriatic's next luxury resort.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

One of the world's oldest olive trees, thought to be over 2,000 years old.

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

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

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

A Baroque mansion with ties to legendary magicians and alchemists.

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

Each year, Germany's "City of Dragons" slays the world's largest walking robot.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

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

This strange sculpture depicts a giant nightmare hare crushing a man to death beneath its colossal bulk.