A beautiful but toxic fountain of mercury.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A whimsical bridge adorned with decorative dragons.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This shop for all your super spy needs hides an educational secret.

The Great Fire of London and the regulation of one-way streets both started in this alley.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The taxidermied remains of a once-great parrot.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

This incredible viaduct was part of the Victorian railway boom and helped the Midland Railway navigate tough terrain.

A petite castle folly in the English countryside.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.