Gate of Darb-e Koushk
One of the oldest gates of the city of Qazvin, which opens to Alamut, Rudbar and places and hunting grounds of northern Qazvin, has an entrance with an arc and a half circle. On each side of the corridor, there are two arches of facades, which come out softly and expose the open arms. This gate only have one facade to the outside of the city, which has tiled and formal decorations, and the body inside it is a simple brick. The existing tiling work was carried out during the reign of Qajar azdol-al-malek. The city of Qazvin has had nine gates in the past; today, only two gate are remained one of them is Darb-e-Koushk and another one is old gate of Tehran.