Nishapur

Infobox settlement | official_name = Neyshabur | native_name = | settlement_type = City | other_name = Raēvant (), Abarshahr (), Shadiyakh () | image_skyline = Nishapur, officially romanized as Neyshabur, (; from Middle Persian "New-Shapuhr", meaning: "The New City of Shapur", "The Fair Shapur", or "The Perfect built of Shapur") is the second-largest city of Razavi Khorasan Province in the Northeast of Iran. Nishapur is situated in a fertile plain at the foot of Binalud Mountain Range and has been the historic capital of the Western Quarter of Greater Khorasan, the historic capital of the 9th-century Tahirid dynasty, the initial capital of the 11th-century Seljuk Empire, and is currently the capital city of Nishapur County and a historic Silk Road city of cultural and economic importance in Iran and the region of Greater Khorasan. At the 2006 census, Nishapur's population was 205,972 in 56,652 households. The following census in 2011 counted 239,185 people in 71,263 households. The latest census in 2016 showed a population of 264,375 people in 83,143 households. It is the third most-populous city in the eastern provinces of Iran after Mashhad and Zahedan. Nearby are turquoise mines that have supplied the world with turquoise of the finest and the highest quality for at least two millennia. The city was founded in the 3rd century by Shapur I as a capital city of Sasanian satrapy known as Abarshahr or Nishapur. Nishapur later became the capital of Tahirid dynasty and was reformed by Abdullah Tahir in 830, and was later selected as the capital of Seljuk dynasty by Tughril in 1037. From the Abbasid era to the Mongol invasion of Khwarezmia and Eastern Iran, the city evolved into a significant cultural, commercial, and intellectual center within the Islamic world. Nishapur, along with Merv, Herat and Balkh, was one of the four great cities of Greater Khorasan and one of the greatest cities of the Old World in the Islamic Golden Age with strategic importance, a seat of governmental power in the eastern section of caliphates, a dwelling place for diverse ethnic and religious groups and a trading stop on commercial routes from Transoxiana, China, Iraq and Egypt.