Shawshank State Penitentiary is a fictional prison featured in the novella "Rita Hayworth and Shawshank Redemption" by Stephen King. It is set in the state of Maine and is known for its harsh conditions and strict rules. The story follows the life of Andy Dufresne, a banker wrongfully convicted of murder, as he navigates life in the prison. The prison is characterized by its imposing stone walls and a bleak atmosphere. It serves as a backdrop for themes of hope, friendship, and resilience, particularly through the bond between Andy Dufresne and fellow inmate Ellis "Red" Redding. The story was later adapted into the acclaimed film "The Shawshank Redemption."