As well as a poignant photographic collection displaying portraits of patients, San Servolo’s Museum of Madness contains the full paraphernalia of psychiatric treatment of the day, including chains, handcuffs, cages for ice showers, early electro-therapy machines and a rare plethysmograph (the precursor of the lie detector). The tour (which must be pre-booked at least 5 days in advance) also takes in the reconstructed anatomy theatre beside the church and the ancient pharmacy.