Masuleh, Iran, is an ancient town that grew up around the iron mining industry. Its buildings are set against a mountainside with a 60 degree angle! Look closely, and you'll see that the roads and public spaces are the roofs of houses. This saves space and allows for a gradual ascent to the higher levels of the multi-level village. One man's front yard is another man's roof.
In many respects, it’s a city planner’s paradise — a place where roof surfaces are fully used and integrated, and no space is wasted. Another appealing prospect to many urbanists: no cars are allowed, as these would strain the structural limits of supporting architecture.
Even if the buildings could support vehicles, they still couldn't reach the different levels, which are accessible by stairs. See more pictures of Masuleh at 99% Invisible. -via Digg
(Image credit: Hoomanb)