Yazd is located in a vast and arid valley surrounded by Shirkuh and Kharanegh mountain range on the margin of the Lut desert plains with the height of 1230m above the sea level. highly cold and partly humid climate in winter and it has an arid and warm summer due to its geographical location in an arid region of the world. Yazd consists of two parts "Markazi" and "Zarch", four cities and four rural districts. It is one of the Iran metropolises, the fourth vast, the first adobe constructed, and the second historical city in the world which is best-known as "Windward City", "Dar-al-ebade City (the place of worship)","City of Bicycles", "City of sweets" and "City of Qanat, Qonut (Worship) and Qena’at ". Yazd is one of the most spectacular places because of its water reservoirs, alleys, mills, architectural and historical symbols as one of the most remarkable architectural examples of the hot and arid area in the world. The economy of this city depends on handicrafts such as Terme, Daraei, earthenware and ceramic, tiles, carpet, Glim and Zilu, Sweets, smithy, and big industries such as Setare Kavir Yazd Carpet, steel alloy, Chadormalo industrial complex, rolled steel manufactures, cable and optical fiber factory, tile, ceramic and mosaic industry, food industry, textile factories as well as the big mines. Yazd Goldsmith and jewelry are of the most famous industries in Iran, which is comparable with Italy. The race of Yazd people is Aryan and they speak in Farsi, Yazdi accent; they are mostly the followers of Ja’fari Shia, but the followers of other religions such as Zoroastrian, Jewish and Christian live there, too.