A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The curious underground history of keeping Paris clean.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

A red-brick former uranium-ore sorting facility, located within a communist-era forced-labour camp.

The unbelievably opulent home built for an infamous newspaperman.

Slyly buy a shake in the Parker Meridien lobby.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The largest permanent Monopoly board makes one of the longest games even bigger.

The Sun King's military models, saved from the Louvre.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

Collection dedicated to brands, packaging and advertising.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This historic hotel invented the chocolate brownie.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A beautiful bamboo trail tucked in this famous Japanese shrine.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The subtle science of a master molecular gastronomist.