The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Light still pours into the ruins of this ancient Islamic observatory.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

A bright little alley in La Boca is a part of tango history.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This gorgeous, colorful 18th-century church is part of one of Bolivia's few surviving Jesuit missions.

Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

The oldest known university in the world is in Fez, Morocco.

Traditional 11th-century outdoor tannery.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

Mesoamerican monoliths and zoomorphic stones covered in royal visages, ancient mythology, and grand celestial events.

This ancient structure was built by a mysterious civilization that was largely destroyed by a volcanic eruption.

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

Iconic red and white plaques show the creative names invented to navigate the city streets.

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

These enigmatic columns tower over the ruins of an ancient Toltec city.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

The ruins of an ancient city built by Mayan traders is centered around a temple of a sacred feathered serpent deity.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

The ruins of a former sanctuary for elite Aztec warriors.