These types of pathways are dotted all over Rome, and one must bear in mind that when they were laid, there were no cars and buggys/prams!
There were chariots of course, so not sure how they managed though!
Other cobblestones, called 'sampietrini', are not ideal for walking but to maintain their heritage and for tourist appeal, the city officials have pledged to keep them intact.
The photo is a particularly bad example of a pathway, other pathways arent as bad.

