Qazvin is the largest city and capital of the Province of Qazvin in Iran. Qazvin was a medieval capital of the Safavid dynasty for over forty years (1555-1598) and nowadays is known as the calligraphy capital of Iran. It is famous for its Baghlava, carpet patterns, poets, political newspaper, and Pahlavi‘s influence on its accent.
Qazvin Bazaar is one of the most magnificent places located in city of Qazvin. The bazaar has more than 1000 years old and consists of Caravanserai of Sa’d al-Saltaneh, Al-Nabi Mosque etc.
Sources:
https://en.wikipedia.org/wiki/Qazvin
http://www.iranasia.com/qazvin-bazaar/#img-3389