The main trait of this project is a bulge and dint that create the texture in the elevation . A simple and useful algorithm that made an interesting corners in interior and exterior space that changed to an element for shading , dynamic , and form . Utilization of this technique in this project which is an urban and vertical building , made it more stunning and increase the usage and converting to a specific building in urban space with different experience and view , while a viewer is crossing in front of it . all these points transformed it into a dynamic building with commercial and official function. Using of bulge and dint in Iranian architecture as an action to create a light and shadow is so useful. Its Converting and description in a modern way and making a new space in the form of Iranian architecture is important.