http://en.wikipedia.org/wiki/Yazd

“Yazd ( pronunciation (help·info) [jæzd]; Persian: یزد‎)^[1] is the capital of Yazd Province, Iran, and a centre of Zoroastrian culture. The city is located 270 km (170 mi) southeast of Isfahan.”
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“The city has a history of over 3,000 years, dating back to the time of the Median empire, when it was known as Ysatis (or Issatis)”