Make sure there are no hidden weapons in the bathroom.
This, pretty much every jail does this.
Maybe the jail could be centered around escaping and distracting cops instead of "Find a weapon in the toilet, kill all the cops" kind of thing, like Digging holes, Airvents, Sewers,
chipping a wall down, and disguise are ways to escape and all that jazz.
Jail looks good though, and I would join it. Nice work!