OK so it's not quite the Panopticon, but the ability to build Jeremy Bentham's dream prison was one of the first questions raised by Prison Architect fans when it first came out. This proves it IS possible, even given the crude tools that we've provided for the creation of circular building (there aren't any).
The Tower of London
Recreating real world spaces has always been a pastime for fans of this genre, so it shouldn't be a surprise that the famed tower now has a replica in PA (inset is a satellite image of the real tower).
We're treading into liberal hippie territory here, with a prison designed to function almost like a hotel (hence the "Inn") with prisoner rooms coming with their own personal shower. Sure the rooms are still tiny, but anyone who's slept in a Japanese hotel room should feel right at home here.
We're definitely in a drug induced hippie daydream now, with a prison that's essentially been built as a little town. Regular prisoners stay in dormitories while good prisoners get a tiny house and lot for their own. it looks like there are even conference areas, where presumably the prisoners hold town hall meetings to decide their next town improvement project.
Now this is a PRISON. It looks vaguely like a prison layout you'd see in a sci-fi movie, and also resembles a turtle if you squint your eyes hard enough. No? Try it again.
The sheer creativity on display and the dedication it takes to map these prisons is beyond my comprehension. I am humbled by the work these player put into the game and also ridiculously embarrassed that they're doing it with my work. If the good folks at Introversion give me time, I would love to update and add even more awesome stuff for these architects to play with.