Mysteries of the Abandoned

Escobar's Castle (4x3)

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The ruins of a once-palatial compound contain the secrets of one of history's most notorious criminals. 1) Hacienda La Manuela, Guatapé, Colombia; 2) The Zeppelin Bunker, Wünsdorf, Germany; 3) Sao Domingos Mine, Alentejo, Portugal; 4) Denge Sound Mirrors, Dungeness Peninsular, Kent, UK