~ Arkham Asylum for the Criminally Insane~

Arkham Asylum does not have a good record, at least with regard to the high profile cases; escapes are frequent (on at least one occasion, an obsessive-compulsive multiple murderer was signed out of Arkham into the care of an incontinent, alcoholic vagrant, on the grounds that he "looked like a responsible citizen"), and those who are 'cured' and released tend to re-offend. Furthermore, several staff members, including at least one director, have ended up as residents, notably Dr. Harleen Quinzel, Lyle Bolton and, in some incarnations, Drs. Jonathan Crane and Hugo Strange.

In addition, prisoners with unusual medical conditions that prevent them from staying in a regular prison are housed there. For example, Mr. Freeze is not technically insane, but he requires a strongly refrigerated environment to stay alive, which only Arkham can provide.