Architect and urban & computational designer Abhinav Bhardwaj made this great set of slides comparing urban design in the US and Europe, peppered with pithy observations like:
European space is shaped on purpose: American open space is what’s left over.
Small blocks make more corners, more routes, more street life.
A fine grid offers hundreds of routes; the tree offers one way out.
I don't know. I don't see any grids in Europe. Mostly, streets are named for the place they go to, so really just one way to get there unless you want to go way around