I live in the land of parallel and perpendicular roads. 90% is a grid and everyone once in awhile you get a curve. Even then it is usually because of some natural feature like a lake or something. When I see streets such as the ones on this map card of Hamelin, Germany sent to me from Ricarda I am amazed. No rhyme or reason in a sense and maybe just a bit too much for someone who is used to being so square.