4. Carandiru Penitentiary, Brazil
Carandiru Penitentiary in São Paulo, Brazil is at number 4 in our list of worst prisons in the world. It was the site of a notorious prison riot in 1992. 111 inmates were killed during a police intervention to control the unrest. This tragic event highlighted severe issues within Brazil’s prison system, including overcrowding and brutal conditions, and led to widespread criticism and calls for reform.
