Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Turntable anonymously received orphans, alms, and groceries.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Week-long block party becomes a competition for the best decorated street.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

Bacteria and algae give the salty water its bubblegum hue.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Picturesque intersection of witchcraft and ancient Christianity.

A fortress off the West coast of Portugal that dates back to 1502.

This museum contains a vast array of puppets and marionettes from all over the world, featuring incredible works by Portuguese creators.

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.

This giant sculpture made of trash is a critique of society's wastefulness.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

You can cross from one country to another in a single hop on this little bridge.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

This abandoned five-star hotel is now a five-star urban exploration destination.

Ancient catacombs form the foundation for this Rococo orgy of a church.