This is the prison that I started before life caught up. I started work on it January last year and have worked on bits and pieces ever since then. Currently on my 56th save.
At the moment, it holds 0 prisoners because I need to build their cells eventually. As shown in the image, I've done about half of it each with full and detailed interiors. They are mostly the staff areas (bottom right hand corner), workshops (to the left of them), various staff classrooms and offices running up to the Main Reception with Parole and Visitation above (close to the road so there are no issues). Above that are the prisoner classrooms next to the Psychologist offices and meeting room (with a secret security room running along the left). Next to that are even more meeting rooms with a library and mail room running off the screen. Finally, the objects that do render are that of the infirmary and another staff room and above that is an infirmary.
My plan is to have Criminally Insane prisoners towards the left of the infirmary - you can see I made a start to the protected entrance that has separate corridors coming in / out and more security rooms. Eventually I would like to have cells with garden spaces in between kind of like that one pre-made map though that obviously depends whether I come back to it.
A bit more about the prison itself - it's basically a massive centralised courtyard with everything surrounding it. You can see there are hedge mazes, a massive restaurant, church and small bakery with some shops by the lake. The lake is ugly and I have no clue how to make it less ugly - any tips on that would be appreciated.
Now for the moneymaker - the whole right of the prison is focused on Forestry as well as green power which is in that fenced off concrete area on the far right of the map. There are three staff buildings in this section (two are shown) with running tracks to ensure staff get around quickly. There are helipads near the staff buildings as well.
Enjoy!