In Naples it's easy to come across buildings like this. Some of them show one or more walled windows, as well as the entrances. But this building seems to be a single block of tuff worked so as to appear as a place that was then, intentionally, made inaccessible.

An urban void in Naples is ever really (and only) an unused city space. It would be more accurate to say that, in Naples, a disused space is an open wound surrounded by pulsating life that, by difference, produces a kind of vibration.