Location []
Hospital Brass is located in Gotham City. Hospital Brass is not the actual name of the hospital , one character used the slang term to identlify it's power the real name is still unknown.
Signifgance[]
After Barbara shot Butch in the forehead and leaving him comatose, Butch was put into Hospital Brass only to later be dumped in Slaughter Swamp , making him become Solomon Grundy.