Arkham Asylum

Arkham Asylum is a mental health care prison located in Gotham City, New Jersey. The Asylum is owned by Hugo Strange, and is where numerous criminally insane lunatics are sent to be rehabilitated and cared for. However the owner, Hugo Strange, often performs experiments on his patients there to understand their mind and install alternate personalities in them, however the experiments were shut down due to the reports the GCPD kept receiving.

Arkham is known to be a magnet for the criminally insane, right down to its psychiatrists. Examples are Harley Quinn, originally Harleen Quinzel. She madly fell in love with The Joker, and took up her own criminal identity. And Jonathan Crane, who performed experiments on his patients to discover their greatest fears. After being fired, Crane became the infamous Scarecrow. Even its owner, Hugo Strange, is as crazy as Batman's other foes.

The Asylum's famous patients include The Joker, The Riddler, The Penguin, The Mad Hatter, Black Mask, Clayface etc.

Trinkets
Arkham has a number of trinkets that it has collected from its various inhabitants. However the interior only displays three.

Scarecrow's Fear Toxin
A sample of Scarecrow's fear toxin is seen on the computer to open the doors of the asylum.

Penguin's Hat
The Penguin's purple hat is seen on the top hanger of the asylum.

Mr. Freeze's Gun
Mr. Freeze's freeze ray gun is seen being displayed on the left side of the top of the asylum.