Mobarakieh Caliph Haroon-al-Rashid, after being aware of bravery of Qazvin’s people against Dailamian invasions, ordered to construct a mosque in Madineh Mobarakieh as well as a wall around it. After his death, the work was completed by one of his Turkish commanders in 256 AH. From late 5th century AH. to the time when Ismailieh castles were attacked by Mongol Holakoo, Qazvin was influenced by the events relating to Hasan Sabbah (Ismailieh) movement and his successors and it was also the witness of long clashes and wars between central government and Ismailieh.Qazvin was selected as capital by Safavid and several buildings and monuments were constructed over there. In Ghajar time, Tehran was selected as capital and Qazvin became a city of importance due to locating in the course of the way to Europe. Presently, Qazvin city is one of the important cities of the country and is considerably developed from economic and social points of view and also it is one of the centers of industrial, agricultural and service development of Iran. The important natural, historical and religious sights of Qazvin are as follows: Several mineral water springs, Portals of Ali Ghapoo and Chehel Sotoon edifices in Qazvin, Several castles including Alamout, Nowzer Shah, Lambsar, Semiran, Sangrood, Shahrak, Sasan, Shirkooh and ..., Barajin castle, Sangi (stone) castle with Koofi inscription, Safa public bath, Several underground water reservoir, Yaleh Gonbad and Kafar Gonbad domes, Several old private houses like Razavi, Saadieh, Zarab Khaneh, Golshan, Vasir, Hadgi Reza and Shahroodi inside the city, Seyed Alikhan and Sepahsalar ancient dams, Old graveyards of Hasan Abad and Shah Kooh, Gazorkhan and Harzvil ancient villages, Nosrat Abad, Ghazanchal, Hossein Abad, Meshkin Tapeh, Tapeh Alvand, Agha Baba, Dolat Abad and .... ancient hills, Several Baazars and Timcheh (arcade), Several caravansaries, Old gates of Qazvin, Museum and Kolah-Farangi edifice in Qazvin, Kabir, Haydarieh, Masjedolnabi, and Sanjideh Jame’ mosques, Several mourning places (Hosseinieh) and old schools, Several old tombs and mausoleums, So many Imanzadeh.