Hand-knotted rugs are made by tying individual knots around the warp threads. This ancient weaving technique results in a sturdy, durable rug that can last for generations. Hamadan rugs are a type of hand-knotted rug that originates from the city of Hamadan in Iran. They are usually made with heavy cotton shot of weft (single wefted) and are known for their thick, plush piles. Hamadan rugs often feature geometric patterns and subdued colors, making them a popular choice for rooms with a more traditional décor.