This unique rock formation is quite the local celebrity, although one day it may come crashing down.

This beautiful spit of land was once the summer playground of the king of Spain.

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Stunning Roman aqueduct used for 1900 years and still standing.

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

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.