Devastated landscape used for hundreds of years by the Romans as their primary mining site.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

The oldest Roman lighthouse still in use.

This enormous censer uses a pulley system installed over 400 years ago.

These sandstone replicas of a whale spine represent the history and culture of the Canary Islands.

This propeller hub is one of the last remnants of a ship that crashed off the coast of the Canary Islands.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

A display of torture devices used in the Spanish Inquisition and other scourges of medieval Europe.

At least according to the Guinness World Records.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

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

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

This little sun pays homage to a massive gate that once stood at this location.

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

This piece of early engineering is rather unknown despite its location in the heart of Madrid.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

Along the pavement of this neighborhood in Madrid are quotes from famous authors.

A haven for book enthusiasts across the street from Retiro Park.

This lucky bronze frog was gifted to Madrid by a casino.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

A vault of safe-deposit boxes in an old bank has been repurposed as a time capsule of Hispanic culture.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

Touching this little fossil embedded in the wall of a grand mosque-cathedral may make your wishes come true.