This haunting stone chasm is a hotbed of mossy rock and English legend.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

A historic Georgian building and warm springs.

A stone obelisk towering over the surrounding countrysides beckons hikers across the rolling moors.

The last of the 19th-century booze-free bars has been slinging teetotal tonics for over a century.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

Manchester's abandoned train depot lingers in a post-industrial purgatory.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

A 19th-century time capsule of travel, fiction, and historic texts still available to the public.

A tiny, hidden alleyway dedicated to the father of meteorology.

The quirky - and private - constructions of a secluded artist depict the house of God.

Rumors and legends of secret Nazi activities surround this eerily remote island mansion.

Haunting monument to the German Jewish philosopher who died while fleeing fascism.

A house covered entirely with shells.

This mountaintop observatory is home to one of the world's largest reflective telescopes.

This 47-story "M" needed 20 years to be completed

Salaguti's live-in museum: a fortress against criticism and consumer art.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

This century-old ruined temple was reborn as "The Church of Skate."

This imposing modern citadel started out as a home renovation project.