On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

The ruins of an ancient temple to the Aztec wind god discovered in the middle of a metro station.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

Mexico City's largest market contains a Willy Wonka-esque wonderland.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Where layer cakes tower above one’s head and there is never a shortage of icing.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

This ancient theater was once the home of fierce gladiatorial battles.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

This mountain trail inspired Nietzsche to complete his magnum opus.

The writer took refuge in this home in Southern France for the last 17 years of his life.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.