Constructed in 1302-12, the tomb of the eighth Ilkhanid ruler is the main feature remaining from the ancient city; today, it dominates a rural settlement surrounded by the fertile pasture of Soltaniyeh. As the ancient capital of the Ilkhanid dynasty, Soltaniyeh represents an exceptional testimony to the history of the 13th and 14th centuries in Iran. Criterion (iii): Soltaniyeh, as the ancient capital of the Ilkhanid dynasty, represents an exceptional testimony to the history of 13th and 14th centuries. AuthenticityThe historical monument of the Mausoleum of Oljaytu at Soltaniyeh is authentic in terms of its form and design, materials and substance, and location and setting. There is a management plan with short-term (1-year), mid-term (3-year), and long-term (5-year) objectives related to equipment, research, restoration and conservation, and development of tourism at Soltaniyeh.