The city of Tabriz is situated 600 km west of Teheran and one of the largest cities in Iran and also the captial in the province of Azerbajdzjan.. It is one of the oldest rug weaving centers and makes a diverse range of carpets. A popular design in the House of Haghi range of Tabriz rugs is that of the large central medallion (Mahi or fish) on a field of Herati (diamonds) framed by an intricate floral border. Usually they are constructed from a combination of wool and silk, giving a unique and wonderful appearance. The central medallion also features in other designs, along with pictorial scenes and figures, flora and fauna.