|Mersey Care NHS Foundation Trust|
|Location||Whalley, Lancashire, England|
|Lists||Hospitals in England|
The hospital is located on a site known as Clay Fields which previously formed part of the Whalley Abbey estate. It was designed by Henry Littler in the Neo-Georgian style using a dual pavilion layout and, although commissioned, in 1904, as the Sixth Lancashire County Asylum, it actually opened as Queen Mary's Military Hospital in April 1915 during the First World War. Some 56,800 allied servicemen were treated at the hospital between 14 April 1915 and 31 June 1920.
After the war the hospital re-opened as a mental health facility, known as Calderstones Hospital, in June 1921. After the introduction of Care in the Community in the early 1980s, the hospital went into a period of decline and, although its closure has been announced, union leaders have advised that the decision is unlikely to be implemented before 2020. As of June 2019 it was the only NHS hospital in the United Kingdom to specialise in learning disabilities.
- "Calderstones Hospital". County Asylums. Retrieved 11 April 2019.
- Gill, Andrew. "The History of the Calderstones Hospital Railway 1907 to 1953". Burnley in the Great War. Retrieved 16 March 2014.
- "Union bosses: Calderstones Hospital closure date 'unachievable'". Lancashire Telegraph. 19 April 2018. Retrieved 11 April 2019.
- Grieve, Jonathan (12 June 2019). "No date for closure of Calderstones Hospital". LancsLive.