Khaf spray windmills from the largest collections of clay, mud, and wood from the Safavid period, and the largest and oldest collection of mills in the world.

The durability of these windmills depends on 120 days winds of Sistan & Balouchestan province. One of the most significant and impressive cultural buildings in the Nishtefan area are the windmills.

The collection of Nashtifan mills is a historical and technological monument left over more than a thousand years ago in Iran. These historic monuments as one of the tourist attractions of Khorasan Razavi host annually hundreds of foreign tourists and thousands of domestic tourists.

In the past, windmills were usually used to make wheat flour. Windmills have also been used to do other things, such as pumping water. There is no exact information about the date of these Windmills.