Sing Sing Correctional Facility is a maximum-security prison located in Ossining, New York. Established in 1825, it is one of the oldest correctional institutions in the United States. The facility houses male inmates and is known for its strict security measures and high-profile prisoners. The prison is situated on the banks of the Hudson River and has a capacity of approximately 1,700 inmates. Sing Sing is also notable for its historical significance, having been the site of various rehabilitation programs and the electric chair, which was used for executions until 1963.