Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

A Brutalist monument in the middle of a housing estate by artist Victor Pasmore.

A museum that chronicles the interesting and often dark history of the London docklands, once one of the major trading ports of the world.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

This historic streetcar system has been running since the 19th-century.

A surreal paleontological sculpture garden pays homage to a fading industry.

Legends say this red sandstone monolith and the dozens of smaller boulders that surround it were once a coven of witches—before a Scottish wizard turned them all to stone.

A vintage fire engine is hidden inside this World War I-era water tower.

An abandoned Yorkshire castle that is hidden in plain sight.

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

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

Now overlooking the Home of the British Army, this gargantuan statue was removed from its original location in London.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

A 2,000-ton rock resting in a state of a delicate balance.

A jazz band formed by African water animals in the heart of Flemish Brabant.

This temple was constructed entirely by Roman soldiers.

A stone, covered in metal, commemorating an event that happened somewhere else a thousand years ago.

Looming communist pillar with a Czech twist.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

This bridge was constructed from the rubble of the infamous Bastille.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.