This modern labyrinth lies in the shadow of a ruined medieval castle.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

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

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

The mystery of this small, brick pond eluded its possibly only investigator until his death.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

This stately estate house features a tower covered in a bright, modern mural.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

The fountain marks the area where hundreds of accused witches were burned at the stake.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

London's smallest police station is barely the size of a phone booth.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

This medieval church tower has maintained its clockworks since the 16th century.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

A five-story homage to tea times past.

"Purveyors of traditional sweets and vintage treats."

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

Victorian-era Londoners really wanted to believe this 17th-century cistern was actually an ancient artifact.