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

This perfectly conical hill in the La Serena reservoir is humorously known as Europe's Largest Roundabout.

Fragments of human bones are embedded in the walls of this quaint alley.

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

Mural dedicated to one of Spain's favorite cartoonists, Francisco Ibáñez.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A Roman bridge closed to car traffic in the 1990s now open to foot traffic.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

The gaunt visage of this angular Christ giant is enough to put the fear of God into all who see it.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Thousands of well-dressed mummies below a monastery.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Every inch of this chapel is covered in craftsmanship from across the world.

A small but stubborn relic of Spain’s turbulent past hides in plain sight.

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

One of Madrid's most beloved statues is of an anonymous citizen.

Automatons that were once removed after one fell from the building.