Mental Floss

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Barcelona's Casa Vicens will open in October as a cultural center dedicated to the famed Catalan architect.

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That's pretty metal.

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For the past 21 years, King Willem-Alexander has moonlighted for Dutch airline KLM.

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Queen Elizabeth II and François Mitterrand took their own trains, meeting nose-to-nose on the same track in Calais.

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The voyages of Christopher Columbus and others may seem like ancient history, but they actually resulted in major cultural exchanges that shaped the world we live in today.

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The gravestone has an interactive screen capable of displaying pictures, video, and other types of digital odes to the deceased.

Portrait of Gerard de Lairesse by Rembrandt van Rijn. De Lairesse, a painter and art theorist, had congenital syphilis that deformed his face and eventually blinded him.

The origins of syphilis may be one of the greatest (and grossest) health mysteries of our time. What we do know is that, throughout history, people were quick to point fingers at each other.

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For decades, experts believed the work was a forgery.

Felix König, Wikimedia Commons // CC BY 3.0

You may remember the rock arch, called the Azure Window, from HBO's "Game of Thrones."

Renaud Camus via Flickr // CC BY 2.0

The artist's headstone was damaged last year after a stormy spring.

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They're the funeral industry's unsung heroes, showcasing how hard gravedigging can be.

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Marta Minujín's work challenges the repression of knowledge and free speech.

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Billy Muir, 67, works as a sheep farmer, firefighter, electrician, garbage collector, and more.

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It was reportedly donated to Dutch refugees in the Netherlands after World War II.

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Some historians believe it killed Arthur, Prince of Wales in 1502—and changed the course of history.

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The proposed bill comes in the wake of several recent child hospitalizations.

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The dastardly thieves target socks and underwear.

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5. The dome was the largest ever constructed in the ancient world.

The prop was used in the 1970 movie 'The Private Life of Sherlock Holmes.'

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2. There's a reason it's nicknamed "The Venice of the North"—it has more than twice the number of bridges the Italian city does.

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Two men thought connected with the theft are in police custody.

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History buffs can see the military general's famous "bicorne" hat and a slew of other items at France's national army museum.

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Gustave Eiffel used his private aerie to receive notable guests like Thomas Edison and for private reflection.

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Customers can use cash or credit cards to make their delicious purchase on the fly.