There are Many people who love traditional cities and life style. I recommend them to visit Yazd. As an Iranian I say that the best place to feel Persian is Yazd.
Yazd is located in middle of Iran and the city is near Isfahan (270 kilometers from Isfahan To Yazd). It has a population about 7 hundred people.
Every where you can see different houses with a big difference compare to other Iranian cities, because It is exactly in desert and really hot in summers. So surviving from hot weather is the most common idea in Yazd architecture. So Many buildings of Yazd has a special towers that they works as a air conditioning called Badgir (Wind catcher). If you want to see Badgir and find out how they work, visit this special building with amazing wind catchers, Sesh-Badgiri Citern.