Yazd formerly also known as Yezd, is the capital of Yazd Province, Iran. The city is located 270 km (170 mi) southeast of Esfahan. At the 2011 census, the population was 486,152.Because of generations of adaptations to its desert surroundings, Yazd has a unique Persian architecture. It is nicknamed the "City of Windcatchers" from its many examples. It is also very well known for its Zoroastrian fire temples, ab anbars, qanats, yakhchals, Persian handicrafts, handwoven cloth (termeh), silk weaving, and its time-honored confectioneries.
Yazd has a history of over 5,000 years, dating back to the time of the Median empire, when it was known as Ysatis or Issatis. The present city name, however, is derived from Yazdegerd I, a Sassanid ruler of Persia. The city was definitely a Zoroastrian center during Sassanid times. After the Arab conquest of Iran, many Zoroastrians migrated to Yazd from neighboring provinces. By paying a levy, Yazd was allowed to remain Zoroastrian even after its conquest, and Islam only gradually became the dominant religion in the city.
According to the Iranian Census of 2011 the population of Yazd is 486,152 people from 168,528 families, which includes 297,546 men and 285,136 women.