The grand building of the Sary Aslan Castle is located to the north of the city of Kangavar. The main materials used in its construction are, brick, clay and gypsum. The primary structure of the castle had an external large court yard and a building in the western side, an internal building in northern side, a bath in southern side, and a stable in the internal courtyard. The northern side building is single storeyed. In the external courtyard of castle there is a rectangular pool that with sculptured stone, have been brought up like a wall construction, higher than the courtyard. In the external courtyard of the castle, there are many bulky trees named as plane tree, mulberry and false acacia.