usa?

No London, England and the suburban, semi-rural areas on the outskirts of London.

I am sorry the location information is not more detailed and am particularly curious about the prison, which seems very realistic to me and presumably is one that was possibly vacant for refurbishing. I do not think any UK prisons actually permanently closed during the '60's as it was before there was an overdue upgrading of prison facilities from late '70's onwards although overcrowding has persisted throughout and is currently as relevant as at any time in last half century.