Quarter building ideas for Minecraft City?

Me and a few friends are currently building a kind of city on an island, so far we have a modern-looking quarter and an old-fashioned one, but we want a lot more quarters, does anyone have an idea which quarters we could do? (or in which style they should be)

A western quarter and another Chinese / Japanese quarter with the stark buildings ^^

Possibly. A banking district with high-rise buildings or a district with a block of multi-family bungalow roofs on the main street.