On 22 January 1840, the Mettray Penal Colony officially opened. Mettray was a French prison farm for juvenile criminals that was imitated by other incarceration programs throughout Europe as a disciplinary model. For Michel Foucault, in Discipline and Punish (1975), its creation was a turning point in human power relations, as its structure reconfigured punishment as discipline and surveillance; it transformed society into a carceral culture. As Foucault claims, power and knowledge are one and the same.