Tags: Prison.
Texas State Penitentiary at Huntsville or Huntsville Unit (HV) nicknamed Walls Unit is a Texas state prison located in Huntsville Texas United States. The approximately 54.36-acre (22.00 ha) facility near Downtown Huntsville is operated by the Correctional Institutions Division of the Texas Department of Criminal Justice administered as within Region I. The facility the oldest Texas state prison opened in 1849.The unit houses the State of Texas execution chamber.