Rudolf Hess was Adolf Hitter’s Deputy. In 1941 just before the German invasion of the Soviet Union, Hess secretly flew alone to Great Britain to hold peace talks, suggesting Nazi Germany would withdraw from Western Europe if Great Britain helped in the War with The Soviet Union. Winston Churchill dismissed the idea, and sent Hess to the Tower of London; Hess became the last political prisoner of the Tower of London ever.
After the War in 1945 the Nuremburg Trials took place, and Hess was given a life sentence. He was to serve this life sentence in Spandau Prison, Berlin. Along with 6 other Nazi war criminals. These men were the only prisoners in a 600 capacity prison. All were released before 1966 either on compassionate grounds or their sentence finished.
The Soviet Union never let Hess leave much to the disgust of Great Britain, France and The USA. Hess stayed there until 1987 alone as the only prisoner for 20 years. Finally The Soviet Union agreed he should leave, before the news got to him, he committed suicide. The prison was then demolished. Leaving Hess as the last ever prisoner of Spandau Prison.