The practice ofimprisonment as punishmentfor crime date stamp back as far as the 17th century when masses — even orphans — were held for minor thing or for awaiting trial . But according toscholar Ashley Rubin , those " prisons " were more consanguineal to today ’s jails — not pen — and were not places for penalisation .

Today , theworst prisons in the worldare a far cry from the pre - trial obtain cubicle of the past . Poor living conditions go beyond overcrowded prisons ( or , at the other end of the spectrum , alleviate minimum human contact with extreme closing off ) . The earth ’s worst prisons lack right medical care , put occupants atsevere risk of violenceand adventure the physical and genial health of yard bird .

Mendoza Prison, Argentina

With a population roughly three times its capacity ( as of 2021 ) , Mendoza Prison in Argentina isseverely overcrowded . As many as five inmate are crowded into cells that measure only 51 square feet ( 4.7 square meters ) , and many inmates are forced to sleep on the floor without mattress .

Amnesty International reportedon the conditions back in 2005 , alert that " people immure in Mendoza are in such a desperate situation that they have run as far as to tailor their mouths up in demand of better living conditions . " The consideration at that time were so fearsome , they included torture and in some case even expiry to inmates .

captive had inadequate medical care , and the prison miss a proper sewage system , forcing inmates no other selection but to habituate plastic bagful and bottles as their washrooms .

worst prisons

La Modelo, Colombia

La Modelo Prison , locate in Bogotá , Colombia , is notorious for its violent environment and high levels of crew influence .

The deftness has a foresighted account of overcrowding and inadequate state control , which has led to riots and frequent clashes between rival faction . Corruption among guards has allowed weapon and drug to flow into the prison , exacerbating the ferocity . inmate live on in squalid conditions , with limited entree to healthcare and basic services .

La Modelo has become a symbol of the broader challenge facing Colombia ’s prison system , where overcrowding , gang control and rottenness remain pervasive issue . Despite effort to reform the deftness , the prison house remains one of the most dangerous in the state .

Gldani prison

Guantanamo Bay Detention Camp, Cuba

Guantanamo Bay Detention Camp , fix within a U.S. naval base in southeasterly Cuba , is one of the most controversial detention facilities in the human beings .

establish in 2002 to detain surmise terrorist in the aftermath of 9/11 , it has faced intense unfavorable judgment for its use of indefinite detention without test and enhanced interrogation technique , which human rights groups have label as torment . Over the years , reports of waterboarding , nap neediness and psychological abuse have emerged .

Detainees have been held in prolonged isolation , often without being officially file , leading to international call for the facility ’s closure . Although its universe has significantly fall , Guantanamo remains open , stand for a disputatious chapter in the global fight against terrorism .

Kamiti Maximum Security Prison

Ciudad Barrios Prison, El Salvador

Ciudad Barrios Prison is locate in the eastern part of El Salvador and is notorious for its overcrowded conditions and violent environment .

The quickness is chiefly known for bear members of the Mara Salvatrucha ( MS-13 ) gang , one of the most violent felonious organizations in the world . Inside the prison , MS-13 fellow member often retain significant ascendance , moderate to an atmosphere where violence and intimidation are well-worn .

Prisoners hold up in halter quarters , with many facilities operating well above capacitance , lead to a lack of basic necessary such as clean water , right sanitization and aesculapian care . Despite occasional government activity crackdowns , the prison rest a dangerous blank space , ruminate the broader challenges El Salvador faces with gang violence and prison reform .

Camp 14, North Korea

Black Beach, Equatorial Guinea

Black Beach Prison , located on Bioko Island in Equatorial Guinea , is wide believe one of the harshest prisons in the globe . It has long been associated with human rights maltreatment , including routine torture , malnutrition and poor sanitisation . Political captive are often hold up here under brutal precondition , facing overcrowded cells and constant surveillance .

The prison clear international notoriety during the regimen of President Teodoro Obiang Nguema Mbasogo , when allegement of torture and extrajudicial killings within the prison wall became public . yardbird report living in squalid conditions with picayune access to fresh piss or medical care .

Human rights organizations have repeatedly condemned the facility , urging reform to address its terrible conditions , but little has commute over the year .

Gitarama Prison

Le Santé Prison, France

Le Santé Prison , locate in Paris , has a long history date back to the nineteenth century and is known for its rigid conditions and notorious gamy - profile inmate .

The prison ’s overcrowded cells and outdated facilities have been a persistent issue . A lack of right ventilation and minimal admission to natural luminosity contribute to the trouble prisoners face . Inmates get strict regimentation and intense surveillance , with circumscribed opportunities for rehabilitation .

Le Santé has been criticized for its poor health care service , which have lead to several inmate deaths over the years . late reforms have aim to modernize the prison and improve bread and butter experimental condition , but it remains a symbol of the challenge facing France ’s correctional system .

Diyarbakir Prison

Gldani Prison, Georgia

A 2012 scandal at Gldani Prison , located in Tbilisi , Georgia , called international attention to the country ’s recitation ofprisoner torture at the hands of guards .

Numerous ill-treatment , include rape and violation , were let out in picture film by a 35 - year - old former prison house - guard - turned - whistleblower . The videos sparked major protest across the country , andinspired existent reformin how inmate there are treated .

Though conditions in the country ’s prison have better in the past decade , Gldani Prison is in the spotlight once again as the site ofprotests spark off by the imprisonmentof the rural area ’s former President of the United States , Mikheil Saakashvili .

ADX Florence

Though various groups of protestors are both in favor of and against Saakashvili ’s release , the position is calling tending to the facility ’s notoriety and repute .

Mumbai Central Jail, India

Mumbai Central Jail , commonly known as Arthur Road Jail , is the oldest and largest prison in Mumbai , India . earlier built in 1926 , the facility has long struggled with overcrowding , holding more than double its intended capacity .

yard bird frequently confront unsanitary precondition , limited access to fresh pee and poor breathing . The prison has house many high - visibility malefactor and terror suspect , which has direct to besotted surety measures and a highly controlled environment .

However , the living atmospheric condition have thread critique from human rights groups , who cite inadequate healthcare and insufficient opportunities for reclamation . Despite attempts to modernise the facility , Mumbai Central Jail stay emblematic of the challenges face by India ’s overcrowded and underfunded prison house system .

San Quentin

Kamiti Maximum Security Prison, Kenya

Kenya is notorious for tough conditions in its prison house and Kamiti Maximum Security Prison , located in Roysambu Constituency , is wide regarded as the worst .

It was built in 1954 by the British and modeled after an erstwhile - way colonial system to house offenders during a state of emergency declared in October 1952 . Kamiti still has itsoriginal gallows , though the last execution there was in 1987 .

It is notoriously overcrowded and the conditions are insanitary — the prison house ’s capacity is approximately 1,200 to 1,400 , though story suggest there arebetween 1,800 and 2,500inmates crammed inside . Serious wellness condition , include HIV and AIDS , gonorrhea , syphilis , TB and dysentery are rearing .

Though Kamiti was already well - known for housing political prisoners and executions by hanging , its infamy uprise in 2008 , when a riot actuate by a contraband search was captivate on cellphone and shown on television .

It made headline again in 2021 when three convicted terror suspect get away . Seven wardens were later arrested for help help their escape .

Camp 14, aka Kacheon, North Korea

Near the middle of North Korea is a 60 - square - mile ( 155 - straight - kilometer ) prison house adroitness known both asCamp 14 and as Kacheon . accord toreports by the U.S. Department of State , Camp 14 was built in 1959 near the center of the res publica , about 40 miles ( 64 kilometers ) north of Pyongyang .

inner circle 14 is conceive a political prison camp and can hold 15,000 prisoners . That means they are dish up life sentences for being " enemy of the State Department . " Inmates here are routinely starved , and forced into striver labor in mining , textiles and farming .

inner circle 14 also employs a policy known as " three generations of punishment , " which means many prisoners are there for only being related to someone suspected of a crime — and they ’ll probably will die there without ever committing a law-breaking themselves .

Black Dolphin Prison, Russia

Black Dolphin Prison ( aka penal dependency No . 6 ) is located near Russia ’s border with Kazakhstan . It ’s reserve for the country ’s most dangerous and violent convicted criminals , admit serial killer , cannibals , pedophiles and Chechen terrorists .

It isnamed for the dolphin sculpturecreated by the con that sits on the grass at the front of the prison house response .

Prisoners here are ascertain 24 hours a day via video surveillance , and guards make rounds every 15 minutes . Two inmate are assign to each 50 - square - foot ( 4.6 straight - meter ) cell that is behind three sets of steel door to keep it extra - isolated from guards and other inmates .

Prisoners are allow outside their cells for only90 moment per dayin a barren concrete practice session grand . If they ’re moved anywhere within the facility , they ’re cuffed , blindfolded and forced to take the air out to over so they ca n’t learn the prison ’s layout , interact with other prisoner or overwhelm the guards .

This practice is allegedly unequalled to Black Dolphin .

Butyrka Prison, Russia

Butyrka Prison , locate in Moscow , is one of Russia ’s previous and most infamous correctional facilities . Built in the 19th century , it has a foresightful history of overcrowding , deficient condition and force . Initially a pre - trial detention center , Butyrka often put up detainees awaiting trial run for extensive period , lead to reports of excessive pre - trial custody without fair to middling legal support .

The cells are typically cramp and ill ventilated , and there are frequent reputation of diseases spreading due to unhealthful conditions . Inmates have described it as a psychologically taxing environment , with modified opportunities for recreation or renewal .

The prison has been a symbolic representation of Russia ’s historically harsh punishable system and bear on to face critique from human rights organizations .

Vladimir Central Prison, Russia

Vladimir Central Prison , located north-east of Moscow , is one of Russia ’s most well - known pen . Established in the eighteenth hundred , it has a long account of lodging political prisoners , including Soviet dissidents and writers .

Conditions at Vladimir Central have been consistently harsh , with inmates facing poor sanitization , overcrowded cells and circumscribed medical concern . In the past , the prison has been a situation for punitive labor and force confession .

Despite some modernization endeavor , it remains a symbolization of Russia ’s historically repressive penal system . Reports of abuse , neglectfulness and the mistreatment of inmates continue to surface , highlighting the ongoing challenges within the Russian prison system .

Muhanga Correction Facility (formerly Gitarama Prison), Rwanda

As Gitarama , the prison house was home tomore than 7,000 prisonersin a adroitness that was built to arrest only 400 . Most of the inmates weresuspects of the Rwandan genocidethat take place in 1994 .

give the extreme overcrowding , the men and fair sex housed were thrust to stand up barefoot on the filthy ground for all hr of the day , causing their foot to molder . Many eventually required amputations , but with only one full - clock time doctor dedicated to the prison , most prisoners were unable to invite the discussion they need , leave in half a dozen decease each solar day .

In recent years , the formation has been rebranded as Muhanga Correctional Facility . There has been an accent on rehabilitation and reintegration into society , with program target at vocational training , farming and psychological support . However , the prison house ’s substructure remains under strain due to the orotund inmate population , and many detainees face difficult living conditions .

Despite these challenge , Muhanga is visualise as part of Rwanda ’s broader effort to transform its justice system in the wake of the genocide , with a focus on rapprochement and reclamation .

Bang Kwang Central Prison, Thailand

Bang Kwang Central Prison , located just north of Bangkok , is notorious for its harsh conditions and gamey - surety standard . Known as the “ Bangkok Hilton , ” this prison house is where many inmates attend life sentences or are on death quarrel , often for drug - related crimes .

Foreign convict are usual here , and language roadblock compound the closing off . The conditions are notoriously rough ; prisoners get minimum food ration , sometimes consisting only of Timothy Miles Bindon Rice and soup . In 2013 , the prison house finallyended its practiceof shackling inmates .

There is limited access to aesculapian fear , and mental wellness support is almost nonexistent . The overcrowded adeptness holds far more inmates than its intend capacity , creating an environment rife with psychological and strong-arm stress .

Despite some reforms , Bang Kwang remain a symbol of the harsh penalization and unmanageable prison conditions in Thailand .

Diyarbakir Prison, Turkiye

Diyarbakir Prison was built in 1980 by the Ministry of Justice in Türkiye . After the Sept. 12 , 1980 , Turkishcoup d’état , Diyarbakir became a martial legal philosophy military prison where torment was a common tool for forced absorption of the Kurds .

A total of 650,000 people were detained after the September coup , and most were beat or tortured . More than 500 died — many of those at Diyarbakir . During the " the flow of barbarousness , " which refers to the early and mid-1980s when Diyarbakır was freshly built , prisoner there were subjected to dread number of systematic torment .

Though rarely confirmed by master , C of testimonies from former Diyarbakir yardbird have told of strong-arm and mental contumely ; quietus , centripetal , water and food want ; " Palestinian hangings " ( attend by the blazonry ) ; mock executions ; electric shocks to genital organ ; origin of nails and good for you teeth ; rape or threat of assault ; and forged .

These abuses to Kurdish prisoners fuel the rise of the Kurdistan Workers ' party , or PKK , which still fights against the Turkish state . Today Diyarbakir is still a forge prison house and is known for its significant number ofhuman right hand violations per yardbird .

In 2021 , TurkishPresident Recep Tayyip Erdoğan announcedit would be turn into a ethnical center , to mixed reviews .

HM Prison Belmarsh, UK

HM Prison Belmarsh is a Category A facility in southeastern London and is often touch on to as “ Britain ’s Guantanamo ” due to its eminent - visibility con and nonindulgent security measures protocol .

The prison primarily houses serious criminals and terrorism suspect . It has a reputation for its tight surety and heavy use of solitary confinement , with many yard bird pass foresightful geological period isolated from others .

Despite these strict measures , Belmarsh offers several renewal curriculum aimed at reducing reoffending rates , including vocational training and educational opportunities . Human right radical have expressed worry about the prison house ’s exercise of nongregarious lying-in and the psychological impact on detainees , specially those held for extensive periods .

ADX Florence, USA

The prescribed name is United States Penitentiary , Administrative Maximum Facility , but it ’s also know asADX Florence , Florence ADX , Supermax and the Alcatraz of the Rockies . This is the most maximum - surety prison in the United States .

Built in 1994 , this adeptness has housed some of the world ’s most dangerous criminals , including Ted Kaczynski ( the Unabomber ) , Ramzi Yousef ( responsible for the 1993 World Trade Center bombing ) and Zacarias Moussaoui ( involved in the 9/11 attacks ) .

Inmates at this deftness pass 23 hours a day in solitary confinement in their 7 - by-12 - foot ( 2 - by-3.6 - metre ) concrete mobile phone . window are tiny , and prisoner get their meals through small slots in the cells ' metal door .

When prisoners are allowed out of their cells during the one - hr recreation flow , they have on several restraints and are see by multiple sentry go to a small out-of-door cage . The prison house wasonce describedby former warden Robert Hood as " a neat rendering of hell . "

Penitentiary of New Mexico, USA

The Penitentiary of New Mexico , locate near Santa Fe , is infamous for the 1980 prison house riot , one of the baneful in U.S. story . During the riot , inmates pick out control of the prison house , lead to extreme violence and the deaths of 33 prisoner .

Today , the facility operate under tight security measures and houses some of the most life-threatening outlaw in the state . Despite reforms , the memory of the 1980 belly laugh looms large , and the prison remain a symbolization of the challenges within the U.S. correctional organisation .

Red Onion State Prison, USA

Red Onion State Prison in Virginia is a supermax facility design for the highest level of surety and control .

Known for its extensive use of solitary confinement , the prison has faced scrutiny for keeping inmates in isolation for up to 23 hour a solar day , pass to far-flung reports of psychological deterioration . critic argue that the prolonged closing off praxis amount to psychological distortion .

While the prison aim to contain some of the most dangerous inmate , it has been repeatedly criticized for its coarse disciplinal metre and poor mental health services . Despite its report , the state has made efforts to review and reduce solitary travail practices in recent class , though protagonism group take that more change are needed .

San Quentin State Prison, USA

The sometime prison in California , San Quentin is notoriously known for its violence . It has been home tomany notorious criminals , includingCharles Manson , Scott Peterson and Sirhan Sirhan , who assassinated Robert F. Kennedy .

It had the only destruction row facility in the country for more than 700 end row inmate ( the largest facility in the United States ) , and home to California ’s only gas bedroom . But in early 2022 , the state get going the cognitive process ofclosing expiry rowand relocating the inmates , three geezerhood after the California governor ended executions in the state .

Over the years , and especially in the sixties and 1970s , San Quentin earned a reputation forcorruption and interracial riotsthat were encourage by the guards .

Terre Haute, USA

This prison house complex in Indianaconsists ofmaximum - certificate , intermediate - security and miserable - security units . Nicknamed"Guantanamo North , " Terre Haute is domicile to the United States federal governing ’s execution chamber .

The ACLU accused Terre Haute in 2008 of having " grossly poor " conditions at its special confinement unit , where death row inmates are held . It accuse the prison of denying the prisoners medical care and mental health services , and said they were subjected to so much noise that it caused them slumber deprivation .

In January 2021 , Terre Haute had thehighest figure of COVID-19 casesin the federal prison system , including convict on decease rowing . Union execution of instrument at Terre Haute have been on pausesince U.S. Attorney General Merrick Garland announced July 1 , 2021 , the Department of Justice would review its policy on majuscule penalization .

This was after the Trump presidency carry out 13 Union slaying just months before the oddment of Trump ’s condition , include theexecution of Lisa Montgomeryby lethal injection Jan. 12 , 2021 . Montgomery was the first cleaning woman put to death by the U.S. in 67 class .

Still,46 menremain on death row at Terra Haute , including Dylann Roof , who was doom to dying for federal hate crimes for killing nine church parishioner in Charleston , South Carolina in 2015 .

We updated this article in conjunction with AI technology , then made sure it was fact - checked and cut by a HowStuffWorks editor in chief .