A monument with a strange legend involving a horse's tongue.

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

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

This Underground station has been a popular filming location for decades, even before it closed.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

A pair of club-wielding guardians stand watch over London's first public clock to feature a minute hand.

The taxidermied remains of a once-great parrot.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

A building that survived WWII, possibly on the virtue of its name alone.

These haunting ruins belong to an ancient village that once had one hell of a view.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

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

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

Spain's largest bullring offers a unique glimpse at architecture and history.

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

The world's largest wooden structure.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

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

A cluster of granite granaries perched on stilts.

These narrow stone granaries have been used to store and dry out grain for hundreds of years.