Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

One of the largest underground systems runs under Canada's largest urban center.

This massive, ancient stone was disassembled and then put back together again.

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

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

The walls and streets of the ancient city are peppered with penises.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Erotic art covers the walls of the largest ancient pleasure palace.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This demon atop the Notre-Dame de Paris looks utterly bored.

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

The celebrated eyesore created by starry-eyed sweethearts.

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

The video game-themed street art first popped up in the French city.

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

This bridge was constructed from the rubble of the infamous Bastille.

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

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