Main Entrance of the Huntsville (Walls) Unit ID: 424 | This file appears in: Texas State Penitentiary at Huntsville This photograph highlights the main entrance to the Walls Unit before it was rebuilt in the 1940s due to the weak sandstone brick it was originally constructed with. | Source: Walker County Treasures Download Original File SourceWalker County Treasures "Main Entrance of the Huntsville (Walls) Unit" appears in: Texas State Penitentiary at Huntsville
