Angola is the name given to the Louisiana State Penitentiary. The land on which the prison was built originally comprised four plantations, one of which was called Angola reflecting the African country of origin of most of its slave workers.
Like Alcatraz, it is an institution that has embedded itself into American culture. Much of Steven King's novel The Green Mile was based on Angola's death row of the 1930s and the movie Dead Man Walking was partly filmed there.
Blues singer Leadbelly spent four years in Angola and it has been referenced many times in popular music by artists as diverse as Gill Scott Heron and Ray Davies.