One of the earliest large-scale "hyper" roofs in the U.K. is now a derelict roadside attraction.

A series of idealized caves carved to entertain guests.

Known as the "Stairway to Heaven," this historic canal dates back to the 1700s.

This hidden fortress has been coined the "City of Ghosts."

The country home of world-famous designer, writer, and artist extraordinaire, William Morris.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

Scotland's oldest medieval bridge is also among the last reminders of early medieval Aberdeen.

A remarkable medieval structure born from a 14th-century disaster.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

The main gates have been locked since 1745 and will remain so until the Stuart Dynasty returns to the throne.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

A museum wholly devoted to juvenescence.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

A remarkably well preserved tower dating all the way back to the Iron Age.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.