Qazvin is a city in the northwest of Iran. It is also one of the most ancient cities in Iran. Qazvin City is the capital of Qazvin Province. This city was the location of a former capital of the Persian Empire. Archeological findings show the existence of civilization in Qazvin goes back to more than seven millennia BC. According to several historical references, Sepah Street in Qazvin is the first street built in Iran. The climate of the province in the northern parts is cold and snowy in winters and temperate in summers. In the southern parts the climate is mild with comparatively cold winters and warm summers.
Qazvin today is a center of textile trade, including cotton, silk and velvet, in addition to leather. Some of the most famous tourist areas of the province are Chehelsotun Palace, Museum of Qazvin City, Grand Bazaar of Qazvin, Qazvin Grand Mosque, Al-Nabi Mosque, Ali Qapu Gate, Aminiha Hosseiniyeh, Darb-e Koushk Gate, Tehran Gate, Dual Towers of Kharaqan, Alamut Castle, Ovan Lake of Alamut, Varchor Waterfall, Garma Galou Valley & etc.