This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

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

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

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

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

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

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

The final resting place of the great navigator, or maybe his brother.

Commonly acknowledged as the only public monument to the Devil himself.

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

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Ancient Egyptian relief, claimed to depict an electrical light.

The largest known Ancient Egyptian obelisk.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

A fountain standing as a testament to a doomed alliance.

The ancient latrines of the Greeks, in all their public glory.

1513 Turkish world map, full of European state secrets and snarky commentary.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

A refurbished locomotive from a bygone era in the middle of the Jordanian desert.

The world's oldest map of the holy land gives us a fragmented glimpse of the layout of biblical nations.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.