These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

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

The unfinished final resting place of some of Spain's most prominent politicians.

This enigmatic artifact is a rare depiction of an ancient Iberian noblewoman.

Once a resting spot for King Fernando VII.

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

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

This Arab fortress was once the largest citadel in Western Europe.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

A network of hundreds of interconnected wineries in caves hides under the town center.

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

This influential Renaissance-era library was once the haunt of kings and monks.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

A pair of gigantic baby heads greet passengers at Atocha Station.

12th-century holy complex shares land with a natural park full of heavenly waterfalls and raptors.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

Five million people are laid to rest here, more than the population of Madrid itself.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

On La Gomera, "Silbadors" communicate in a 4,000-word language of whistles.

You can soak in three relaxing pools filled daily by the tide.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.