Sometimes called the Banksy of Madrid, Muelle was a pioneer of street art in the Spanish city.

A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

A must for film lovers in Madrid and home to the Spanish Film Library's projection space.

Low-frequency noise compared to an idling train can only be heard by some of this industrial town's residents.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

A thorough look at the development and history of the underground's rolling stock of the Madrid subway system.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

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

A 13th-century convent where St. Margaret of Hungary spent her teenage years.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Meet the bronze beloved pet to a family of famous peeing statues.

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

The camera-toting gargoyle juts out from the exterior of a Gothic cathedral.

A medieval village holds a very modern hotel.