A Kashan rug is a type of Persian rug from the area of Kashan. Kashan is a city in Isfahan Province in North Central Iran. There was production of Persian Carpet at Royal workshops in the 17th and early 18th century. Many authors attribute Persian Rugs and Carpet to Kashan in the 16th century particularly of the so-called small silk Kashan Persian Carpet group. According to Rug Scholar Barry O'Connell that is a leap of faith not necessarily supported by any published evidence. The Persian Carpet workshops ceased production in about 1722 after the Afghan invasion.