An uninhabited village that preserves and documents rural architecture and an endangered way of life.

Princess Kristina played a pivotal role in fostering diplomatic ties between two kingdoms, Norway and Spain.

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.

Dedicated to one of the author's most iconic works.

These 2000 year old remains of a Roman aqueduct are hidden inside a hotel lobby.

An ancient stone structure that, according to legend, was built by witches.

A significant cache of prehistoric valuables is on display in an unassuming museum tucked inside a town hall.

The oldest vestiges of Madrid found here, have been incorporated into this new museum.

The first mechanized factory in Spain is also one of the most significant mints in the history of money.

Among the best preserved megalithic monuments in the Aragón river valley.

A masterpiece of Rationalist architecture in the center of Madrid with lizards on it.

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

This taberna has been frying up crunchy salt cod since 1860.

The world's largest sundial can cast a shadow more than 1,600 feet long.

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

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

It's believed these prehistoric individuals were the victims of cannibalism.

Hidden under a center for the elderly are the dungeons which were used during the Spanish Inquisition.

Once a resting spot for King Fernando VII.

At least according to the Guinness World Records.

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

This Art Nouveau gate still stands at the former entrance of a 20th-century Spanish writer's colony.

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

A road that winds through this natural cave is the only way to access the small, appropriately-named village of Cuevas.