Arkham Asylum

Arkham Asylum‏‎ is a psychiatric hospital/prison and major location in the Batman franchise. It is the place where Batman's most dangerous criminals and legally insane villains reside. The Joker was placed in Arkham and was treated by Dr. Harleen Quinzel. However, he manipulated her into falling in love with him and drove her crazy, making her become Harley Quinn. 
Category:Arkhamverse locations
Category:Teen Titans locations
Category:Villain lairs