An underground labyrinth can warp the mind and turn friend into foe.

An abandoned theme park is home to secrets of a forgotten, imaginary world.

Experts reveal how Mafiosi was imprisoned on a Mediterranean island.

Experts investigate a classified military wasteland with a deadly past.

Experts investigate the ghostly remnants of a beautifully constructed town.

Experts uncover the haunting remnants of a settlement in the Nevada desert.

Deserted buildings are evidence of a city’s lost industrial past.

Experts investigate the ruins of a spy’s former battlefield.

Experts examine a military cover-up with extraterrestrial objectives.

The ruins of a historic Scottish castle is now a bewitching wilderness of hidden dangers with deadly booby traps obscured afoot; experts and historians reveal a bygone Second World War military hospital with bizarre ties to an infamous Nazi occupant.