HM Prison Wakefield, often referred to as the "Monster Mansion," is one of the UK’s most notorious and enduring penal institutions, operating as a high-security (Category A) prison for some of the country’s most dangerous offenders. Established in 1595 as the West Yorkshire House of Correction, the facility has undergone multiple transformations, with the current structure largely dating from the 1847 rebuild. The prison’s design, featuring a radial "half cartwheel" layout with four wings, was considered innovative and durable, remaining in use as the main accommodation block to this day. Wakefield Prison’s history is marked by significant milestones. In 1823, a Governor’s house and a treadmill were added, and by 1884, a new facility with 732 cells was completed, making it one of the largest and best-equipped prisons of its time. During World War I, the prison was repurposed as a work camp for military offenders and conscientious objectors, who famously issued the "Wakefield Manifesto" demanding better treatment. Today, HM Prison Wakefield continues to house over 750 of the UK’s most dangerous criminals, including infamous figures such as Robert Maudsley, Ian Huntley, and Levi Bellfield. The prison is known for its strict security protocols and has been a focal point for discussions on prison reform, rehabilitation, and the management of high-risk inmates. Notable aspects of HM Prison Wakefield include its historical significance, architectural resilience, and its role in shaping modern prison practices. The facility has also been a subject of public interest due to its association with some of the most notorious crimes in British history. Despite its grim reputation, the prison remains a critical part of the UK’s criminal justice system, balancing security with the ongoing challenges of rehabilitation and inmate welfare.