Bollate Prison, officially the Second House of Detention of Milan-Bollate (), is a prison in Milan, Lombardy, Italy. It opened in December 2000.
It is one of the few Italian institutions run as an open prison, with cells left unlocked during the day and inmates moving around the site to reach work and training. As of 13 September 2026 it held 1,624 inmates against 1,267 regulation places.
A study by the economists Giovanni Mastrobuoni and Daniele Terlizzese estimated that a year served at Bollate instead of an ordinary prison reduces recidivism by around 6 percentage points.
Facilities and activities The institution was opened as an attenuated-custody facility for ordinary prisoners, a regime intended for inmates who are not considered socially dangerous.
Inmates take part in schooling, language courses and vocational training as carpenters, electricians and cooks.
The site also houses InGalera, a restaurant open to the paying public and staffed almost entirely by inmates. Built in a block formerly used as a dormitory for prison officers, by 2016 its tables were being booked two months in advance.
Women's section The prison has eight wings, two of them for women; one of the two houses inmates authorised to work outside the walls under article 21 of the Italian prison law or on semi-liberty. At the time of a survey published in 2023 by the prison monitoring organisation Antigone, 140 of the 1,371 people held at Bollate were women, and the institution was the largest in Lombardy.
The women's wing opened in 2008 with fifty inmates and by 2026 held more than 180, the largest female population of any Italian prison. Susanna Ripamonti, editor of the inmate-written magazine carteBollate, has said that the work available to them is confined to low-skilled jobs such as cleaning and kitchen duties.
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