An opulent chateau perched in the middle of a lake, the Château de la Mothe-Chandeniers, now stands dilapidated in the Loire Valley of France. Experts investigate and uncover the remains of a festering palace whose owner was labeled a traitor by France's most notorious king.

The ruins of a mental health institution, Hartwood Hospital in North Lanarkshire, lie deserted in the Scottish woodlands; experts investigate and uncover the terrifying past of a notorious psychiatric asylum where many entered, but few escaped.