This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

This 1920s Dutch barge is now a floating bookstore.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

This Manchester laundromat is hiding something.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

Stonehenge has nothing on Castlerigg’s views.

Fantastically decorated underground chambers built in the 1760s.

The cedar tree in Highgate Cemetery earned its title by accident.

London's largest outsider art museum.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

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

This foolish Victorian sea fort was converted to a deluxe hotel.

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.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

This crumbling folly looks like an enchanted left over from Middle Earth.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

The oldest inn in England served brew to the crusaders.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The largest stone circle in the world has ended up bringing up more questions than it has answered.