Principles of cultural landscape Restoration. Case Study: Bisotun, UNESCO world heritage site, Iran

Increasingly, heritage site restoration projects require conceiving beyond their disciplines to develop analysis, strategies and design concepts with other fields of expertise to overcome challenges that threaten eternity, unity, and the other heritage sites conflicts. Cultural Landscape restoration in heritage site, plays the crucial role in reconnecting tangible and intangible aspects of heritage site with considering the natural, historical and cultural aspects in an interdisciplinary restoration plan. "Bisotun" site as an outstanding universal value and a testimony to ancient Iranian civilization is inscribed on ICOMOS world heritage list (2006, No 1222). This research emphasizes on the principles of the cohesive restoration plan to converge conservation and design frameworks according to valuable layers of this heritage site as an asset for all humanity. With defined viewpoint to cultural landscape restoration, conditions of applicability and feasibility will be preserved for long-term benefits. Research results show that, during the last fifty years, the natural-historical succession of the site has lost its coherence and connection. The descriptive-analytic with correlation research methods have been applied to present and codify the principles in this site. Research in multi scaled zones is inevitable and description of observation including the content of opportunities and threats in the site will be applied.