United States Penitentiaries are federal correctional facilities designed to house individuals convicted of serious crimes. These institutions focus on security and rehabilitation, providing various programs to help inmates reintegrate into society. They are managed by the Federal Bureau of Prisons and are known for their strict rules and regulations. In addition to federal penitentiaries, there are also state prisons that serve similar purposes at the state level. Both types of facilities aim to ensure public safety while offering educational and vocational training to reduce recidivism rates among inmates.