One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

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

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

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

This Canadian hunting lodge is a long way from home.

A darkly erotic open-air statuary in Catalonia.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Historic medieval fortified city in southwest France.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

Tucked away in the forests of North Florida resides a 19th-century lighthouse.

This phone booth-sized municipal building has been a piece of police property for more than half a century.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

After the oysters have been shucked, and the restaurant's been shuttered, the terrazzo sidewalk from the 1940s is all that remains.

The beautiful, fruit-covered facade hints at this building's former life.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

The world's first ice hotel is still one of the most elaborate and beautiful.

These coffin-like Brutalist balconies were inspired by a nearby mine.