Finely woven Kurdish rugs from the town of Senneh (modern Sanandaj) in western Iran, famous for delicate Herati and boteh designs and a thin, tight body. They carry one of the great ironies of the rug world: although the asymmetrical Persian knot is called the "Senneh knot", the weavers of Senneh actually work with the symmetrical Turkish knot — a reminder to judge rugs by structure, not by label.