In its radiocentric structure, J. Bentham’s Panopticon is easily recognizable. The jail, in which all convicts were constantly under control, was designed by engineer De Fazio, approved by Ferdinand I and built in 1832. Hexagonal plan, five-star body, five big buildings and a half-a-meter wall that separates it from the road. Originally between the wall and the premises was a big moat full of water, an additional defense against escapes. In fact, De Fazio was inspired also by military architecture and defensive structures such as castles and fortresses. Today the former Bourbon jail is the venue of the Superintendency BAP of Avellino and, from March 17,2011, it is also the venue of the new Museo Irpino del Risorgimento.