A dream setting:
A bit hard to remember, but I was in a colorful alternate version of Japan. There were three areas. Two were connected and you could walk to them. One was bursting full of shops, almost so much it was a maze. Some shops were melded together with one side of the wall lined with tiny trinkets and they clashed against their neighbor whose shelves were filled with snacks and foods. Half the shops doubled as tiny homes. I remember the sense of being hurried -- you could only get to some places by walking through a certain set of shops. I'm sure there were secrets only the inhabitants knew.
You could walk downward far enough into the old housing district, which was much closer to an older Japan. Only a few buildings this time. Everything was quiet. There was a set of lanterns lighting up the spiral path down. It was laid out like a cul de sac down a hill. A building situated randomly down the spiral until you reached the "square" at the bottom.
The third area was a floating island. From the housing district there was a tall set of stairs leading up. It led up to a very high tech train station. The trains were sleek like a bullet train, but the distance wasn't that far. The train took you to the floating island, which was absolutely COLORFUL.
Huge trees, all in bloom. Imagine vibrant sakura trees, but in cool (blues/greens) colors. Aside from the colors, all I can remember was that the fashion and people were cute and robotic.
What do you think? Maybe someone with background art talent can make it come alive.