While visiting another cemetery for a Find A Grave request, I found myself near the property of Stateville Prison, outside Joliet, Illinois. Yes, THE maximum security Stateville. I happened to look across the road. There in the dull, winter grass were several neatly laid rows of headstones. There was no fence or barrier. A large orange monument caught my attention so, of course, I went to look. I only photographed from a distance, because quite honestly, it made me more than a little apprehensive.
This was the Illinois State Prison cemetery.
If you're interested, here is a video I found of the property:
credit for this video to its creator