Masouleh, Iran- Carfree village

"The buildings have been built into the mountain and are interconnected. Courtyards and roofs both serve as pedestrian areas similar to streets. Masouleh does not allow any motor vehicles to enter, due to its unique layout. It is the only village in Iran with such a prohibition. However, the small streets and many stairs simply wouldn't make it possible for vehicles to enter."

-wikitravel