Beijing is a city of many small enclaves. Each neighborhood area is bordered by walls between the sidewalk and the interior buildings. In portions of Beijing where the walls have become old and worn, they are literally being rebuilt in place. The new wall is in the same location, but gets repainted a fresh pink color. The new tile toppings are placed on the top and match the style used on the Forbidden City. On the other side of the walls, the homes and other buildings abut right up against the wall.