ADX Florence, USA: Supermax prison housing the most dangerous criminals in solitary confinement.
La Sabaneta, Venezuela: Overcrowded, underfunded prison plagued by violence and poor living conditions.
Gitarama Prison, Rwanda: Extreme overcrowding and unsanitary conditions lead to high mortality rates.
Tadmor Prison, Syria: Infamous for brutal torture and inhumane treatment of inmates.
Black Dolphin Prison, Russia: Maximum security prison with strict surveillance and harsh conditions.
Diyarbakir Prison, Turkey: Known for severe human rights abuses and extreme overcrowding.
San Quentin, USA: Notorious for violent incidents and housing death row inmates.