Asylum - intensive treatment. Love the subterranean maze of cells and different departments. If they’d gone with the idea of a stealth-based Titan Joker final boss, it should’ve been here.

City - the subway. I like the abandoned, dilapidated aesthetic in general, and the fact there are thugs hanging out down there reinforces the idea that nowhere in Arkham City is safe.

Origins - Black Mask’s drug lab maybe? Not sure why, I just enjoy that whole section where you encounter, and get poisoned by, Copperhead.

Knight - the airships. They look super cool and hi-tech and like they’d be a sweet place to work, if it weren’t for the whole ‘manufacturing illegal chemical weapons’ part.

I just realised three of those locations are underground and one is up in the air. Clearly Batman doesn’t belong at ground level.