An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Giant granite sculptures representing family on the northern coast of Spain.

The oldest Roman lighthouse still in use.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

This ancient Spanish castle sits high upon a hilltop.

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

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A science fiction-inspired apartment building designed by a famous Spanish architect.

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

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

A charming Spanish village sits atop this natural limestone overpass.

A Romanesque tower appears when water levels drop.

Moorish signal station on a stratgic rocky outcrop.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

Of course Salvador Dalí lived in a castle...

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Mysterious Spanish catacombs of unknown origins.

The earliest known map to show America, discovered by accident at a Paris bookshop.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

A completely underwater art museum sends a stark message about humans' impact on the environment.

The morbid items in this small and hidden museum are not for the weak stomached.

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.