Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

Chelsea's soldiers were given strict orders when crossing this historic bridge.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

Mysterious chains and iron stakes adorn this strange grave, with no explanation.

World's largest working waterwheel has been around for over 150 years.

This hidden bridge is where local children leave gifts and messages for the island's fay folk.

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

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The world's oldest bookshop still in operation.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

One of the smallest bookstores on the planet.

The best place in the world to buy tinned fish.

Elaborate tile work in this railway station tells the story of Portugal.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

The world's largest wooden structure.

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