1: Alcatraz, known for its high-security and famous inmates like Al Capone.
2: El Chapo's former home, ADX Florence, is the most secure prison in the US.
3: Tadmor Prison in Syria is infamous for its brutal treatment of inmates.
4: Rikers Island in New York is notorious for its violence and corruption.
5: Bang Kwang Central Prison in Thailand is nicknamed the "Bangkok Hilton".
6: La Sabaneta in Venezuela is overcrowded and known for its harsh conditions.
7: Camp 22 in North Korea is a forced labor camp with reported human rights abuses.
8: Carandiru Penitentiary in Brazil was the scene of a deadly massacre in 1992.
9: San Quentin State Prison in California houses inmates on death row.
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