A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

The scene of the United Kingdom's most famous UFO incident, dubbed the "British Roswell."

These bleak 800-year-old ruins were once the royal residence of choice for hunting in Sherwood Forest.

This 2,000-year-old tree inspired the nursery rhyme "Rock-a-bye Baby."

Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Built during the Scottish boom in the oil industry, the village was never inhabited.

A network of concealed passageways lies within a busy London Underground station.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

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.

Legend says this cave housed a 16th-century cannibal and his family of 48.

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

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

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

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

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

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

Three bridges straddle a stream, one stacked upon the other.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

A site of pagan worship which still attracts people looking for fairies.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.