Oh wow, that place is huge.
We have a similar one in the UK somewhere in Northampton. There is one nearby - Hellingly Hospital.Many would go there to 'ghost-hunt'.
They have recently (in past few years) begun to demolish the place. Big huge place but nowhere near as big as this one here
Always feel so sad when looking at those pics of inside, you can just feel the impressions/energy left behind from those who spent their lives inside.....
My dad used to help out with the summer fete's they had in hellingly hospital. Many of them in there were placed there due to family members passing away. Or for getting pregnant young whilst not married, was used as a place of punishment of sorts, for those who brought shame to their families.
Many stayed as they had become institutionalized and could not cope adjusting back into society
Like you said Dragon, it's not the spirits we need to fear, it's the living