This scenic cable car ride glides 100 feet above Mexico City.

Inside the cloister of the Temple of San Juan Bautista is a ceiling decorated with gold Baroque illustrations.

Abandoned figurines adorn a small plot on the side of a craft market's entrance.

The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

A series of abstract sculptures pop up from an otherworldly volcanic landscape.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

This centuries-old tree tells an unusual tale of vegetation and fertility in the desert.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Indents in the pavement are all that remain from a grisly death machine in Paris.

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

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

A small Japanese village claims to be the final resting place of the son of God (and God's other son's ear).

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

A saintly relic hidden in a Prague church basement.

The middle finger of modernity.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

The ornate miniature mansions were built for Istanbul's feathered residents.

An eatery in a shallow river where diners can enjoy their meal mere feet from the base of an artificial waterfall.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The second-longest continuous wall on the planet protects a hidden secret in the deserts of India.