Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

Grab a cuppa at England's first and only domestic tea plantation.

A fernery hidden by neglect is uncovered, and an ancient specimen along with it.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

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

Charles Babbage's proto-computer, painstakingly brought to life.

England's most notorious suicide spot.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

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

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

This cramped crevasse saw the entire population of its island suffocated inside its depths.

Fascinating town where normal life interfaces with the occult.

A pagan tradition of draping trees with rags eerily lives on.

Repository for more than 22 million pickled specimens.

This tangled English forest looks like something right out of a fairytale.

This series of Scottish caves has no clear purpose other than baffling historians.

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

One of the oldest libraries in England, and one of the last of the great medieval chained collections.

Seat of the Duke and Duchess of Devonshire for centuries.

The view from this giant Stone Age toad is unexpectedly beautiful.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

Glasgow’s piece of the patron saint of love.