Khomeyn is located to the south of the province, in a fertile plain, about 160 kilometres (99 mi) from Qom and 325 kilometres (202 mi) from Tehran. The climate of Khomeyn is a moderate mountainous inclining to a semi-desert one. Winters are cold and summers are moderate. The name of Khomeyn was primarily mentioned in a book named The History of Prophets and Kings. Subterranean canals (qanats), sewers and its famous fire-temple can be named as some pre-Islamic relics. This town was called the center of Kamareh 200 years ago. Recently, this town has become famous because it is the birthplace of the leader of the Iranian Revolution, Ruhollah Khomeini. His father's house has become an important historical monument.