The longest and tallest aqueduct in Britain can actually be sailed across.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

After years of slow decline, a derelict Gothic castle is now being restored to life.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

These haunting ruins belong to an ancient village that once had one hell of a view.

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

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A subterranean playground in an abandoned slate mine.

An amazing collection of curiosities hidden in a small Welsh village.

Overlooking the burial ground is a tower designed to prevent thieves from snatching the recently deceased.

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Possibly the world's smallest museum is home to one exhibit that sheds light on the capital city's dark criminal history.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

A book bound in the skin of an infamous criminal, along with countless other specimens.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

360° views of the city plus five floors of optical illusions and hands-on science.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

A cluttered and astounding collection of antiquities and curiosities.

Decrepit Victorian public lift is a white-knuckle ride.

One fisherman has used his love of pebbles and shore to create a crazy garden of rocky art.

This English medieval castle is where King John died of dysentery.