Prison Chronicles

Located in the heart of London on the River Thames, the Tower of London's reputation for torture and beheadings fuels nightmares. Originally built as a fortress by William the Conqueror in 1078, it becomes a prison in 1101.

Within the first forty years of operation of the Soviet Gulag system, at least 18 million people were imprisoned, and more than one and a half million died. At its peak, the Gulag is comprised of nearly 500 prison districts.