Mashhad (Mašhad mæʃˈhæd), also spelled Mashad, was the capital of Persia during the Afsharid dynasty by Nader Afshar and now is the second-most-populous city in Iran, located in the relatively remote north-east of the country about from Tehran. It serves as the capital of Razavi Khorasan Province and has a population about 3,400,000 (2016 census), which includes the areas of Mashhad Taman and Torqabeh. At the 2006 census, its population was 2,410,800 in 621,697 households. The following census in 2011 counted 2,766,258 people in 804,391 households. The latest census in 2016 showed a population of 3,001,184 people in 914,146 households. The city has been governed by different ethnic groups over the course of its history. Mashhad was once a major oasis along the ancient Silk Road connecting with Merv to the east. It enjoyed relative prosperity in the Mongol period. The city is named after the shrine of Imam Reza, the eighth Shia Imam, who was buried in a village in Khorasan which afterward gained the name, meaning the "place of martyrdom". Every year, millions of pilgrims visit the Imam Reza shrine. The Abbasid caliph Harun al-Rashid is also buried within the same shrine. Mashhad is also known colloquially as the city of Ferdowsi, after the Iranian poet who composed the Shahnameh. The city is the hometown of some of the most significant Iranian literary figures and artists, such as the poet Mehdi Akhavan-Sales, and Mohammad-Reza Shajarian, the traditional Iranian singer and composer. Ferdowsi and Akhavan-Sales are both buried in Tus, an ancient city that is considered to be the main origin of the current city of Mashhad. On 30 October 2009 (the anniversary of Imam Reza's martyrdom), Iran's then-President Mahmoud Ahmadinejad declared Mashhad to be "Iran's spiritual capital". Timeline of Mashhad and Greater Khorasan Ancient Greek sources mention the passage and residence of Alexander the Great in this land, which was called "Susia" (Σούσια), in 330 BC.