Zanjan is the capital city of Zanjan province in Iranian Azerbaijan. Zanjan has a lot of historical sites. Soltaniyeh (Persian: سلطانيه, also Romanized as Solţānīyeh, Solţāneyyeh, Sultaniye, and Sultānīyeh; also known as Sa‘īdīyeh) is a city in and capital of Soltaniyeh District of Abhar County, Zanjan Province, Iran. At the 2006 census, its population was 5,684, in 1,649 families. Soltaniyeh, located some 240 kilometres (150 miles) to the north-west of Tehran, used to be the capital of the 14th century Mongol Ilkhanid rulers of Persia. Its name translates as “the Imperial”. In 2005, UNESCO listed Soltaniyeh as one of the World Heritage Sites.