My dad worked there as a nurse in approx '78, he took me in on serveral occasions and I can remember patients banging heads on walls and stories of other patients waiting for birds to land on open window sills, then catching and biting their heads off. Sad times.
Would also help out at the Wednesday Club in Norwich, where others in the community with mental health problems would meet up: bruised shins from indoor hockey !
There was also a guy who walked around Norwich town centre (Elm Hill) who had would say "Bang bang,James Bond, man with the Golden Gun"
Looking back, this was a great life experience. Thankfully I have also managed to bring up my kids with similar (not so extreme ) experiences.