The Devil's Rejects Wiki

Willows County Asylum was the Mental hospital in which Dr. Satan (S. Quentin Quale) held his contract. Here he performed sadistic surgeries on patients in order to create a super-human race (for what, we don’t know). However the illegal experiments did not go unnoticed, and not before long a horrified posse formed in town to install vigilante justice. The hospital was nicknamed "Weeping Willows" due to the never ending cries of pain which could be heard on the premises.