A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

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

An ancient Egyptian temple in the middle of Madrid, Spain.

Large Hadron Collider and the Birthplace of World Wide Web.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

The oldest residential street in Europe also features an optical illusion.

This astronomical clock is the second oldest in England.

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

This incredible collection contains rare steam-powered engines, rides, and trains.

Cemetery established by the Victorians as a solution to the overflowing graveyards.

This magnificent mural was created with over 30,000 colored bricks.

A tribute to the women who quietly kept the local steelworks alive during both world wars.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A unique waterfall that some believe attracts the fairfolk.

Home to Alan Turing, the cracking of the Enigma code, and Captain Ridley's shooting party.

Home to the most complete dodo remains known - one head, and one foot.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

Eighty million natural history specimens call this gargantuan museum home.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.