The state bird of New Mexico, constructed entirely out of garbage.

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

This big empty pig is a nostalgic throwback to mid-20th-century Texas barbecue.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

This colorful gate stands as an entrance to the walled city of Old San Juan.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

The world's most active stratovolcano is almost always erupting.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Pompeii's less famous neighbor is still revealing her secrets.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.