What is the oldest prison still active in the US?
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The New Jersey State Prison (NJSP), formerly known as Trenton State Prison, is a state men's prison in Trenton, New Jersey operated by the New Jersey Department of Corrections. It is the oldest prison in New Jersey and one of the oldest correctional facilities in the United States. It is the state’s only completely maximum security institution, housing the most difficult and/or dangerous male offenders in the inmate population. NJSP operates two security units and provides a high level of custodial supervision and control. Professional treatment services, such as education and social work, are a priority at the facility. The Bureau of State Use Industries operated the bedding and clothing shops that were once located in Shop Hall at the facility. These industries have been relocated to South Woods State Prison.
New Jersey State Prison
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The 1798 NJ Penitentiary House, which was the first State Prison in New Jersey and the third in the nation after the Walnut Street Jail in Philadelphia and Newgate in New York City is also the oldest building still in operation as part of an active, working prison in the United States. This allows NJSP to lay claim to being the oldest continuously operating State Prison in the US. The only surviving portion of the 1798 Penitentiary House is the original Front House, which functioned originally as the living quarters for the Keeper of the State Prison, the four Assistant Keepers (The first 4 men who served in the capacity of what are known today as State Correction Officers), the Armory, administrative office space on the first floor and a row of cells for the confinement of disruptive prisoners in the basement. Since the Penitentiary House stopped housing prisoners within a few years after the 1832 Fortress Penitentiary opened, Auburn Correctional Facility can lay claim to having the oldest continuously operating cell house in the US.
New Jersey State Prison
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The original building was a brick building with a stone foundation that was completed in 1851. It had a capacity of five prisoners. Renovations made around 1880 included installation of wooden doors, windows, a stairway, and wood floors. The building was expanded with a new stone exterior in 1937. It was listed on the National Register of Historic Places, when it was still in active use as Bledsoe County's jail, making it the oldest operating jail in Tennessee. At the time of its National Register listing, it had two stories and held up to nine prisoners.
Bledsoe County Jail
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Built in 1937, Stanley Prison is currently the oldest institution still in service (the oldest prison built in Hong Kong was Victoria Prison, which ceased operation on 24 December 2005) and houses both male adult convicted prisoners and male adult remand prisoners. It was set up by the then Prisons Department, and is now administered by the Correctional Services Department. The maximum capacity of the prison is 1,714 and has over 800 staff and officers. Stanley Prison, at the time of its construction, was considered to be one of the finest prisons in the British Empire. It was a modern structure built of stone, concrete and steel and consisted of six cell blocks set behind an 18-foot wall. It was originally designed to house 1,500 prisoners.
Stanley Prison
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Anqing Prison is a prison in Daguan, Anhui, China. It was established in 1906 and is the oldest prison still in use in the province. During the late Qing Dynasty it was known as "Anqing Criminal Training Center." During the Republic of China period it was called Yinmatang Prison. In May 1949, it was renamed North Anhui Anqing Administrative Area Prison. In June 1952 it was changed to Anqing public security office LRD (labor reform detachment). In June 1955 it was renamed No.2 Prison. In 1995 it was renamed to Anhui Anqing prison. 
The prison houses serious offenders. The prison enterprise consists of Anqing Wanjiang Color Weaving Company which includes a colored woven cloth factory, a garment factory, a machinery factory, and Qingfeng Plastics Factory. The prison mainly does machinery and garment processing.
Anqing Prison
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The rodeo is still operating and is the oldest prison rodeo in the United States; the Texas Prison Rodeo started in 1931 but was closed in 1986.
Angola Prison Rodeo
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The prison was built in the 1830s, making it one of the oldest still operating today in the Irish prison system. It is the prison in which people convicted of membership of the Provisional Irish Republican Army (IRA) and other illegal paramilitary and designated terrorist organisations are usually detained.
Portlaoise Prison
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Waldheim Prison in Waldheim, Saxony , about 30 km north of Chemnitz, was once the largest penitentiary in Saxony and is the oldest prison still in operation in Germany. It was opened in April 1716 under Augustus II the Strong. There are now 395 places for men.
Waldheim prison
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Nevada State Prison (NSP) was a penitentiary located in Carson City. The prison was in continuous operation since its establishment in 1862 and was managed by the Nevada Department of Corrections. It was one of the oldest prisons still operating in the United States. The high security facility housed 219 inmates in September 2011. It was designed to hold 841 inmates and employed a staff of 211.
Nevada State Prison
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The main building, a half-mile (1 km) south of the city centre beyond the South Inch, was constructed by architect Robert Reid (1774–1856) from 1810-12 to hold French prisoners captured during the Napoleonic Wars. In 1842, the building began service as a civilian prison and today represents Scotland's oldest prison still in use. It comprises five halls (labelled A to C) and has a capacity of 504 prisoners.
HM Prison Perth
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The prison opened in 1877 and was the second prison for women opened in the U.S. Several references note it as the oldest female correctional institution (of those still in operation) in the United States. Its original name was the Sherborn Reformatory for Women, because at the time of its establishment it was located in that town. In 1924, the town of Framingham acquired 565 acres in Sherborn, including the prison and its grounds.
Massachusetts Correctional Institution – Framingham