Its impressive still-working beam engine is a thing of beauty for engineering history fans.

The world's first successful water-powered cotton mill paved the way for the factories of the British Industrial Revolution.

A seaside town with no sea in sight.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

This ruined 15th-century hermitage is steeped in myth and mystery.

This remote castle was built to be a wealthy businessman's palace of vice but is now simply a historic vacation cottage.

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

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

A fantastic castle rumored to be the birthplace of King Arthur.

These mysterious mazes carved on the rock may be up to 4,000 years old.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

A writer's tiny retreat built from salvaged shipwreck timbers.

Wooden sleds have replaced donkeys to cart goods around this utterly charming car-free village.

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

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

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.