Qom is the capital city of Qom province in Iran that is located 125 km south of Tehran. The city lies in the middle of Qom desert alongside Qalamrood River. The majority of people in Qom are from other cities of Iran such as Arak, Zanjan, Tabriz and Hamedan. Qom has been named “the religious capital of Iran and cultural pole” and people of this region mostly speak in Persian. Qom is famous for a Persian brittle toffee known as Sohan , considered a souvenir of the city and sold by 2,000 to 2,500 “Sohan” shops. Qom has a hot desert climate with low annual rainfall due to remoteness from the sea and being situated in the vicinity of the subtropical anticyclone aloft. Its weather is very hot in summer and essentially rainless.