The building looks cold, grey and miserable. There is a central block with four wings radiating out from it. This was so that prison staff could observe inmates in all four directions from a single position in the centre. Each wing has lots of windows placed closely together.
When they were allowed out, to go to chapel or for exercise, prisoners were rarely allowed to talk to one another. The image shows prisoners walking in a circle outside in the exercise yard. They are spaced apart so that it was hard for them to talk to each other. (You might need to scroll the image panel to the right to find them).
You can scroll the image around to explore different parts of it.