These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

This Gothic church houses ornate royal tombs and a magnificent gilded altarpiece.

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

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

The world's most elegant power lines.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

Giant topiary dog once played a role in a terrorist bomb plot.

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

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

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

The world's largest wooden structure.