List of Articles Urban Structure Open Access Article Abstract Page Full-Text 1 - Water Heritage and Urban Structuring: An Analysis of the Role of Qanats in the Formation of Primitive Cities of Nain, Yazd and Gonabad Negar Hassani Fakhrabadi Mohammad Hossein Hassani Fakhrabadi Open Access Article Abstract Page Full-Text 2 - the Spine of the Traditional City to an Active Historical Infrastructure The Transformation of Tehran Grand Bazaar’s Role in the Spatial Organization of the City Sonia Akbari Shahrak Mojtaba Rafiian Mehrnoush Hassanzadeh