This beautiful spit of land was once the summer playground of the king of Spain.

A historic Christian shrine nestled within a spectacular natural cave.

An out-of-place grove of sequoias thrives in northern Spain.

The surviving remnants of a destroyed medieval church now stand in a public park.

The closed and crumbling Francoist luxury resort for workers is still full of life—for now.

The young girl gained fame for her atypical size and was regarded as a curiosity by the Spanish aristocracy.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

This ancient fort overlooks the site of a disastrous retreat from the English Civil War.

A ferry has operated across the River Hamble for around 500 years, but its distinctive bubblegum pink is a more recent addition.

A strange rock formation with numerous legends trying to explain it.

This enchanting mountain plateau celebrates spooky local folklore.

These tenacious 14th-century towers defied demolition and are now a fairytale vacation rental.

Striking occult iconography on a medieval German church.

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

This strange sculpture is an enigmatic icon of this medieval German town.

19th century tunnels burrowed under Liverpool.

This 17th-century pub once had a hole in its wall so the neighboring blacksmith could easily access beer.

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

A museum based on the collection of a Victorian family. Housed in a remaining Victorian villa.

This commemorative stone was erected near the first Scout campsite.

The unusual clock on this 18th-century market building has an extra minute hand for "Bristol time."

17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

The largest stone circle in the world has ended up bringing up more questions than it has answered.