This is where badly behaved and violent / dangerous inmates were placed.
In 6 of the cells - like the one pictured here - the outer door would be closed and there would then be no light whatsoever in the cells.
Solitary confinement stays would last anywhere from a few days to several years, and in "The Hole" - the cells with no light - prisoners would be confined in darkness mostly for a few days but anywhere up to 19 days. That's a long time to be in total darkness.
Some more famous faces to appear in solitary confinement include:
- Al "Scarface" Capone
- George "Machine Gun" Kelley
- Arthur "Doc" Barker
- Alvin "Creepy Karpis" Karpavicz
- Robert "The Birdman" Stroud (this one was a real crowd-puller)
- Ellsworth "Bumpy" Johnson
- Meyer "Mickey" Cohen
I like all their nicknames.