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These buildings were once frightening prisons where prisoners were tortured, isolated, and even killed. It is said that some of these buildings are even haunted due to the atrocities committed there. Today, these old prisons are museums, historical sites, and world heritage sites.

Click on the gallery and get to now the creepiest historical prisons turned tourist attractions.

▲Initially a high school, the building was then transformed into the S-21 Trap and Interrogation Unit during the Pol Pot regime.

▲More than 17,000 people were arrested, tortured, and subjected to poor conditions in this security prison. Not many prisoners were able to get out of this prison alive. The site was the stage for a genocide.

▲The site is now known as the Tuol Sleng Genocide Museum. Here you can learn more about the victims of the prison and visit the cells and torture rooms.

▲For more than 100 years, this prison was considered one of the most violent in the US and several people died here.

▲First used as a juvenile reformatory in 1876, the building later became a prison, capable of housing more than 500 inmates.

▲The building is now a museum and a tourist attraction. The Ohio State Reformatory also served as inspiration for several movies, including 'Tango & Cash' (1989), 'Air Force One' (1997), and 'The Shawshank Redemption' 1994).

▲This building, located in Philadelphia, Pennsylvania, served as a prison between 1829 and 1971.

▲The prison was designed to isolate inmates, so that they could get closer to God and get rehabilitated. The prisoners lived in complete isolation, with only a Bible as their possession, and performed tasks such as making footwear and weaving.

▲Many historical figures were prisoners here, including the famous mobster Al Capone. Today, Eastern State Penitentiary is a historical site visited by tourists from all over the world.

▲San Juan de Ulúa is the name of a small Mexican island that houses a complex of fortresses, including a prison.

▲The castle was designed by the Spaniard Hernán Cortés in 1519. It was used as a prison during the Inquisition and the Porfiriato period, and it was one of the most feared prisons in Mexico.

▲Prisoners were subjected to poor conditions and even torture. Today the prison is a tourist attraction and a historical symbol of Mexico.

▲This imposing monument was built during the 1850s. At one point, it was used to house prisoners transported from England and Ireland.

▲Many British inmates helped build the prison, which would later become their own home.

▲The prison is listed as a UNESCO World Heritage Site. You can visit it and get to know more about the history of the prison.

▲Alexandre Dumas's 'The Count of Monte Cristo,' published in 1844, made the prison world-famous as it tells the story of when Edmond Dantès and his mentor, Abbé Faria, were prisoners at the Château.

▲The French fortification was built between 1527 and 1529 on a small island of the Frioul archipelago in Marseille. The site served as a prison for several years, mainly to house political prisoners.

▲The site houses the Crown Jewels and was used as a prison for several centuries.

▲Some say the site is haunted as numerous prisoners were tortured and executed onsite, including Queen Anne Boleyn and Lady Jane Gray.

▲Alcatraz Federal Penitentiary was a federal maximum security prison, located on Alcatraz Island, off the coast of San Francisco. The prison was in operation from 1934 to 1963.

▲It was designed to house prisoners who were constantly causing problems in other federal prisons and became one of the most famous and feared prisons in the US.

▲Several prominent criminals, including Al Capone, Robert Franklin Stroud, Bumpy Johnson, Rafael Cancel Miranda, Mickey Cohen, and James 'Whitey' Bulger, were prisoners in Alcatraz.

▲The iconic prison is today a tourist hot spot and has been used as a set in many movies.

▲Kilmainham Gaol was a prison located in Kilmainham, Dublin. It is now a museum.

▲The prison opened in 1796 and many of the leaders of the Irish rebellion were imprisoned and executed here.

▲In addition, numerous other prisoners were executed and tortured in this prison.

▲This prison located in Cape Town drew attention primarily during apartheid as it housed the man who would be the country's first democratically elected president, Nelson Mandela.

▲Before that, the island was used as a leper colony between 1836 and 1931.

▲The prison is now a UNESCO World Heritage Site and also one of the most emblematic monuments in South Africa.

▲This prison, located in the state of Tasmania, was used specifically to house the most dangerous criminals and repeat offenders.

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Today it's a UNESCO World Heritage Site and a popular tourist attraction in Tasmania.

Creepy prisons from history that'll give you the chills

Some of these iconic buildings are now cherished as world heritage sites and tourist favorites

20 hours ago por StarsInsider

TRAVEL Prisons

These buildings were once frightening prisons where prisoners were tortured, isolated, and even killed. It is said that some of these buildings are even haunted due to the atrocities committed there. Today, these old prisons are museums, historical sites, and world heritage sites. Click on the gallery and get to now the creepiest historical prisons turned tourist attractions.