The buildings are amazing and the views stunning. It is super crowded with tons of people and very long lines to get into the big sites. The "square" itself is full of people and pigeons. The most annoying part is there are several guys that will ask you the time and try to make conversation with you and then try to have you something and then follow you. We told them no and just kept walking. Do not take anything from them. The other annoying thing is people place their art for sale right on the ground, do not step on it or they expect you to buy it and will walk after you and grab on to you to try to confront you. We watched someone have this issue, but were mindful were we stepped.