A barbarous band of serpents guard the bases of these Aztec temples.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

This baroque wonder is filled with a trove of artistic treasures.

A hotel masquerading as a medieval castle overlooks a Mexican city.

It was dubbed the "Garden of Plates" because it's covered in pieces of discarded dishes.

Plaques on its facade commemorate the Tiber's most destructive deluges.

The former home of the famed revolutionary Pancho Villa is now a museum in his honor.

A statue of the formerly enslaved person considered "the first liberator of the Americas" stands in the town named after him.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

A coastal monument honors one of Mexico's most notable immigrant groups.

This sculpture commemorates Edinburgh's sister city and their respective celebrity dogs.

This series of waterfalls tumble into a radiantly blue river.

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

A tiny replica of the iconic London landmark hides on the side of the steel structure.

An iconic location along the Los Angeles River where countless movie scenes are filmed.

A beautiful example of 18th-century engineering still standing tall.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

The narrowest street in Paris.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

A labyrinth of clothing, electronics, and other counterfeit items.

Home to a timed geyser created by complete accident.