Regarding to a special respect to humans and their living environment, the Harat school has used plethora of architectural elements. Architecture in the Harat school is an element spread in the space of miniature in order to arrange the structure and to create an appropriate position for the characters of miniature. In the present study development of architectural elements and their influence on the structure of the artworks has been investigated using an expression-analytic method. The effect of architectural elements have never been constant through the history starting with a bare facing of a building and improving gradually to an evolutionary state in miniatures of the Harat school which has converted to an alive and dynamic space affecting the entire structure of the composition as included in this study. The experimental species of the current study have been selected from the artworks of primitive and late eras of timured miniatures. A particular perspective thanks to the architectural elements along with frequently changing the point of view and simultaneous illustration of several spaces of a building are the main charachteristics of timured miniatures. Buildings demonstrated in timured miniatures include a vast spectrum from religious buildings such as mosques to civil ones like martial constructions and bathhouses.