No prison. Large window elements and slats slightly tilted.
You can also look out of prison, through bars . So yes after all...
The best is like in Hampshire, you save money and don't need those ugly things that always remind of offices or industrial buildings.
But those things are just symptom treatment, the cause is rather the often unnecessarily large window fronts. Without a view or with a view of a main street or neighbors, in my opinion, pure trend and nonsense. Like bell-bottoms, yuck