Azkaban was originally home to insane sorcerer Ekrizdis. Building was infested with Dementors, which were feared for revenge. Ministry abandoned Azkaban for years due to its dangerous nature
Alcatraz was originally a military fortress and lighthouse in 1854. Prison operated from 1934 to 1963, housing notorious criminals. Maximum capacity was 336, with only one prisoner per cell. Prisoners reached maximum capacity of about 275
Parole is conditional release of inmate before completing prison sentence. Concept originated in 1610-20 Middle French as "parole d'honneur". Alexander Maconochie introduced three-grade system in British penal colonies. Zebulon Brockway developed two-stage system in US Elmira Reformatory
Sinop Fortress was built in 7th century BC as Greek colony. Seljuk sultan Kaykaus II divided fortress in 1214. Inner fortress used as shipyard and dungeon since 1568
Built on Alcatraz Island, 1.25 miles off San Francisco coast. Main prison building constructed 1910-12 as military prison. World's longest concrete building at the time
Prison officers are uniformed law enforcement officials responsible for prisoner custody and safety. Different countries use various titles: "prison officer" in UK/Ireland, "corrections officer" in US/New Zealand. Some officers work for government, others for private prison services companies