Historical buildings of each country are part of cultural identity and character of the people live there. However the shining pages of this valuable notebook are dispersed, certain things can be gathered that cannot be found in a complete works. Many things have been said regarding superficial manifestations, beauty, and symmetry of thresholds, domes and porches but what that deserve detailed survey are Iranian architecture, mystical and mathematical logic.Introversion and inclination of Iranian architects toward yards,stairs,and puddles in the garden,octagonal create calming and warm places that is always in the logic of Iranians. The aim of preparing this book is becoming acquainted with Iranian architecture.Also, introducing famous historical building view point their architecture. This book has been proposed in four main chapters.In order that,at first was studied Iranian architecture in two periods. They are: pre- Islamic ERA and Islamic ERA. In chapter one and two.In continue, in chapter 3 was studied traditional house and introducing famous building in Iran.At finally in chapter four was analyzed "HARATIAN house" architecture style as special historical building in Iran.