The two massive guns that defended Cartagena Bay.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

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

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

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

One woman's decades-long obsession with the "La Fée Verte."

Read a book with a glass of wine at this classically restored bar.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

Of course Salvador Dalí lived in a castle...

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

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

A once-secret library of Freemason history in Catalonia.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

A beautiful but toxic fountain of mercury.

Pivotal home of Nobel Prize winner Pablo Neruda.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.

A beautiful deserted greenhouse in the middle of a park.

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

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

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

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.