This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The oldest public library in Ireland.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

This building has two facades of clashing architectural designs.

A decaying, yet still functioning, work of communist architecture.

An homage to the medieval rulers of Bulgaria.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

This stunning and ethereal mural symbolizes the beauty, unity, and diversity of humankind.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

The Mexican painter Diego Rivera created this unusual museum to display his collection of pre-Hispanic artifacts.

The unique collection often goes unnoticed by visitors focused only on the archaeological objects.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

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