Many cities in Italy have similar settings at the corners of the streets, what is the role of this, especially Venice is more common, the main reason is that many Italian cities are ancient cities, that is, the history is very long, the previous cities are no street lights, these corners, in the shadow area, if the bad guys hide here at night, it is difficult to be found, especially at night when the police chase the bad guys, run and run the bad guys hide in these corners to avoid pursuit, there are also bad guys hiding in the corners of the sneak attack, criminal activities, so the locals have built such facilities at the corners of the street。
Another effect is that the carriage is not easy to get stuck around the corner, or hit the wall around the corner.
