The historically important Persia city of Isfahan has been designated by UNESCO as a world heritage site. Isfahan has many beautiful historic monuments being the former Persian capital during the Safavid dynasty in the sixteenth century. Rug production during the sixteenth and seventeenth centuries has produced many valuable examples which can now be seen in the great museums of the world. Around the end of the seventeenth century the production of rugs and carpets woven in Isfahan ceased and wasn’t revived until the 1920′s. Great master weavers such as Serafian have achieved great acclaim within the rug world and examples of his work can achieve very great prices.