I much prefer older European cities street layout. It's usually a mix of circular and rectangular patterns, but it's still usually easy to navigate by roughly a

I much prefer older European cities street layout. It's usually a mix of circular and rectangular patterns, but it's still usually easy to navigate by roughly assuming each turn is 90 degree. And it's walkable. In Poland especially interesting is Szczecin layout. It seems rectangular when you're there, but when you look at it from height it's actually made mostly out of triangles. You turn right 2 times and you get to where you started :) Messed with my head so much when I was there.