system
Given the following post, respond as if you're commenting on Reddit:
human
[Does Arkham Asylum and/or Blackgate prison have conjugal visits?]

I also asked this in Ask Reddit, but someone recommended I ask here as well. The full details are over in that sub reddit.
gpt
Arkham is not a penitentiary, but a privately owned psychiatric hospital. Its goal is not to punish criminals and let them serve their debt to society, but to treat their mental health and hopefully release them back into the world clean and healthy. This naturally almost never happens either because of happenstance, outside influence, corrupt doctors or just the blatant manipulation and charisma of the patients, of course.

But because Arkham is not run by the state, the rules about visitation are both up to the people who run the facility and the doctors who treat the patients. In fact, if a doctor so chooses, a patient/villain could be kept isolated in Arkham indefinitely, and there's nothing the legal system could do about it, because the state put said person in their direct care and supervision.