The historical city of Yazd, one of the largest cities in the world, has been ranked as the first historic city in Iran and the 21st country in the UNESCO World Heritage list, along with the latest news. For nearly 9 years, the Yazd Historical City File has been listed on the World Heritage List, but today, at the forty-first meeting of the World Heritage Committee, the city was named UNESCO as one of the world's largest cities of brickwork. Despite the fact that there were concerns about the UNESCO deficiencies before the start of the conference, there were a number of constructions in the city's historical context, but at the Polish summit, the city recorded UNESCO. It should be noted that in previous years, unconventional construction in Yazd was a serious problem for the city to register. The 41st session of the UNESCO World Heritage Committee is taking place on July 11 in the city of Krakow, Poland, during which time a number of world works will arrive. And Happily Yazd City get to that achievement to be mentioned as the oldest city of Iran Country.