Al-Ya'qubi describes the building of mosques, baths and markets in al-Karkh and al-Dur. Both areas continued to be populated following the abandonment of Samarra and seem to have been considered as suburbs of Samarra proper; the tenth-century geographer al-Muqaddasi, for example, refers to both localities as dependencies of Samarra. They appear to have survived until at least the 13th century.