There has been an astronomical clock on this spot since the 14th century.

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

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The curious underground history of keeping Paris clean.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

France's most famous cemetery, with some of its most curious tombs.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

This probably wasn't what Mao had in mind.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Traditional 15th century Chinese garden in the middle of Vancouver.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.