The remains of a 13th-century stronghold built by the Welsh prince known as Llywelyn the Last.

Led Zeppelin wrote some of their most iconic songs at this little 18th-century Welsh cottage.

A modest stone circle in North Wales.

According to legend, King Arthur killed a beast that dwelled beneath the waters of this Welsh lake.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

A 19th-century funicular railway shuttles visitors up this surprising sea cliff to one of the world's largest camera obscuras.

A Neolithic tomb hidden among a spectacular boulder-strewn stretch of coast.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

A Neolithic burial tomb connected with a colorful array of legends.

This 500-year-old Tudor home is a treasure trove of history and mystery.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

Want to properly offend a king? Sculpt a giant hill figure in chalk of him riding out of town.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

A slightly surreal menagerie of structures that were lovingly spared from demolition and reconstructed in a field.

This ruined folly was originally built to honor a failed American state that would have become "Westsylvania."

This open-air heritage museum illuminates centuries of historic English life from a West Sussex village.

It was once the longest continuously running cinema in the United Kingdom.

This tiny alleyway is now a shrine to a subculture riot between the mods and rockers.

According to local folklore, this odd face on a wall of Rudyard Kipling's former home can bring visitors a bit of luck.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

This mysterious chalk figure of a horse has been recreated and restored for more than a century.