A kaleidoscopic warehouse-maze of handmade neon signs.

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

Eyam took steps to quarantine themselves and keep the plague from spreading.

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

A open air theatre built on a cliff by an eccentric British woman.

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

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

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

The largest greenhouse in the world is home to over one million types of plants.

A unique waterfall that some believe attracts the fairfolk.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

400-year-old garden, restored to beauty.

Famously misunderstood wonder of the ancient world

The sign at the garden gate reads: "These Plants Can Kill."

A modest stone circle in North Wales.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

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

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

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

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

Decrepit Victorian public lift is a white-knuckle ride.