Even if every single region has its own peculiarities, many can be considered as similar. The accent will change a little, you will find different recepies, but not so distant. But, if you don't limit yourself to cross the border between one region and the next one, and you travel from the North to the South, this way yes, you will find two completely different worlds.
This is something that has always characterized Italy. You could draw a line at the Toscany Region level (Toscany is the region where Florence is) and there, you get two completely different ways of living.
We always tend to be ironic on this, because we know northern and southern we are different, and the stereotypes that are so well known over here are not just a fairly tale, but the truth.
Northern and Southern people tend to make a fool of each other. How? This way!
SOUTHERNS SAY NORTHERNS ARE...
NORTHERNS SAY SOUTHERNS ARE...