It is the most imposing urban building in Cagliari and it stands on top of a panoramic hill surrounded by tree-lined avenues and ‘terraces’ with a view of the entire city. The prison of Buoncammino, like the surrounding urban area, owes its name to the nearby church of San Lorenzo, originally dedicated to the Virgin of Buoncammino. At the top of a high ground, at an altitude of one hundred metres, it occupies a rectangular surface area of 15 thousand square metres.

The complex, made up of six buildings, was constructed in two phases: the first around 1855 and the second between 1887 and 1897. Before Buoncammino, prisoners were held in the Tower of San Pancrazio, with its entrance in the nearby Castello district, and in annexed and surrounding buildings. The first nucleus emerged to integrate the prison facilities in use at the time, but due to overcrowding and the hazardous conditions they were experiencing, it was decided that the new prison should be extended and transformed into a real ‘citadel’ that could accommodate from 500 to a thousand prisoners, with the consequent permanent closure of the San Pancrazio complex. The current appearance is the result of further additions of buildings, which took place around the 1930s.