The historical and the famous province of Khorassan is the country's largest province with an area of 314,000 square kilometers. It is a land of mountains and deserts with endless horizons and a unique enchanting tranquility and splendour. There are various types of hunting animals, protected environments, a national park and on the whole an intact natural setting in this province. The most well known rivers of Khorassan are Atrak, Kashaf Roud and Ghara Sou. According to the latest population census, Khorassan has a population of over five million people who are generally muslim and Persian speaking.
Local dialects are alaso spoken in parts of the province.
Other languages spoken sporadically in the area are Turkish, Kurdish and some Arabic. There are really few religious minorities in this province and they speak their own languages. The vast territory of Khorassan once covered parts of today's Afghnistan, Tadzhikistan, Turkmenistan and Uzbekistan when it was called the greater Khorassan. Khorassan has been the cradle of the Persian language and the civilization of eastern Iran. Socially and politically it has always had an extraordinary importance in the organization of the Iranian state.