Preston School of Industry or "Preston Castle" as it's been known, was built between 1890 and 1894 in Ione, California. A reform school for young male offenders; the hope was to rehabilitate... Read allPreston School of Industry or "Preston Castle" as it's been known, was built between 1890 and 1894 in Ione, California. A reform school for young male offenders; the hope was to rehabilitate, not just incarcerate. But, the castle soon became known for abuse, attempted escapes, mu... Read allPreston School of Industry or "Preston Castle" as it's been known, was built between 1890 and 1894 in Ione, California. A reform school for young male offenders; the hope was to rehabilitate, not just incarcerate. But, the castle soon became known for abuse, attempted escapes, murder, and now - one of the most notorious hauntings in the foothills of California.