The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

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

Venice's "Island of the Mad."

This outdoor library provides around-the-clock access to around 7,000 books.

Inside this discotheque resides a unique memorial dedicated to one club-goers favorite pet.

Remnants of a cone-shaped Nazi bomb shelter.

An old slaughterhouse now holds the largest collection of pig artifacts.

This old wooden funicular railway leads to a cemetery in the forest.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

This German bone house contains the remains of some 20,000 souls.

This magnificent church allows travelers along one of Germany's busiest roadways a chance to rest and reflect.

The jaw of one of humankind's earliest ancestors on display at an overlooked geology museum.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A preserved college lock-up that recalls a clubhouse approach to discipline.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

A German apartment building hosting as many trees as human occupants.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

It's good luck to be mocked by this monkey.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

Aged nearly 1,700 years, the world's oldest bottle of wine is probably still drinkable.

First museum dedicated to the research and history of Epilepsy.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.