For more than half a millennia, this automaton has rung an hourly bell.

A delightful museum devoted to the history of books.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

The former desk of Fire Chief Joseph "Bum" Farto is all that remains after his mysterious disappearance following a drug conviction.

"We Seceded Where Others Failed."

The tree is thought to be the oldest oak in Texas and was once crowned state champion for its monumental size.

In 2008, this Mexico City metro station was the site of an hours-long fight between emo, punk, and goth groups.

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

These subterranean models show Mexico City's central square during three different eras.

A trompe l'oeil mural remembers the original colonial building that once stood here.

This museum houses two of Mexico's most impressive Aztec monoliths.

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

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

A museum in the former home of Marxist revolutionary Leon Trotsky.

Frida Kahlo's childhood home, now a museum of her life and works.

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

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

The scene of a legendary hunt is displayed on this building's facade.

The first public library in the Americas has more than 45,000 books dating back to the 15th century.

An indigenous take on European design creates a stunning visual overload.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

This neon installation is a tribute to a Mexica god, who gave his skin to humanity.

A close look at the church's walls reveals pieces of Mexico's history.