A fountain standing as a testament to a doomed alliance.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

The social hall of this former factory is a Communist-era time capsule.

At this 16th-century monastery in rural Bulgaria, visitors can also spend the night.

These natural cliffs look like they are a part of an old castle complex.

This museum promotes informed contraception by documenting its often secret past.

One of the best collections of wax anatomical models in the world.

A glimpse into the festive and private lives of medieval Europe.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

An endless sea of white conical domes.

Where Venice's gondolas go for a tune-up.

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

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

This 18th-century sundial was designed to calculate the date of Easter each year.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

An unusual number plate signifies the building's saucy past.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

This little-known relic crypt holds stolen parts of a Roman Empress.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.