The mausoleum of Oljaytu was constructed in 1302–12 in the city of Soltaniyeh, the capital of the Ilkhanid dynasty, which was founded by the Mongols. Situated in the province of Zanjan, Soltaniyeh is one of the outstanding examples of the achievements of Persian architecture and a key monument in the development of its Islamic architecture. The octagonal building is crowned with a 50 m tall dome covered in turquoise-blue faience and surrounded by eight slender minarets. It is the earliest existing example of the double-shelled dome in Iran. The mausoleum’s interior decoration is also outstanding and scholars such as A.U. Pope have described the building as ‘anticipating the Taj Mahal’.
Criteria for inclusion as a World Heritage Site
|ii||To exhibit an important interchange of human values, over a span of time or within a cultural area of the world, on developments in architecture or technology, monumental arts, town-planning or landscape design.||All|
|iii||To bear a unique or at least exceptional testimony to a cultural tradition or to a civilization which is living or which has disappeared.||All|
|iv||To be an outstanding example of a type of building, architectural or technological ensemble or landscape which illustrates (a) significant stage(s) in human history.||All|
About the source: UNESCO
Within UNESCO's broad remit, this specialised agency of the UN works towards international cooperation agreements to secure the world's cultural and natural heritage, designating venues of exceptional value as World Heritage Sites.