Behind Bars: The World's Toughest Prisons: Season 1, Episode 4

1 - 4: Sofia Central Prison, Sofia, Bulgaria

With a crumbling foundation more than fit for demolition, the conditions in Sofia Central prison is inhospitable for anyone, including criminals. However, with multiple prisoner cells, bunks stacked 3 stories high and horrid isolation cells, prisoners live idly behind bars for 23 hours a day.