Project

D Block was the maximum security wing at Alcatraz. This is were prisoners were sent to isolate them from the rest of the prison. Here is how it looks these days:

The green doors at the end of the ground floor are the isolation cells which are sound and light insulated and have a cold steel floor for the prisoners to sleep on.

In this photo though, with the warm Western light streaming in, D block seemed to be one of the more pleasant areas of the prison, especially on the upper levels with a view of the Golden Gate. I suppose the question is whether the view would sustain you or merely taunt you about what you are missing.