Zabid's domestic and military architecture and its urban plan make it an outstanding archaeological and historical site. Besides being the capital of Yemen from the 13th to the 15th century, the city played an important role in the Arab and Muslim world for many centuries because of its Islamic university.

Brief synthesis Zabid is one of the coastal towns in Tehama area west of Yemen, sitting on a rise above the river junction and the fertile flood plain. It is a circular fortified town with four remaining gates, which was supplied with water by extensive canals. It was already flourishing when Islam was established in the region in the 7th century. Its development is due to Ibn Ziyad (the founder of the Zyadite dynasty), who was sent to the region by the Caliph al-Mamun in 820 AD to quell a rebellion. The core of the town is its first mosque, Asa'ir. The Great Mosque lies to the west of the town to which spread the souq. Zabid has the highest concentration of mosques in Yemen, some 86 in all, mainly simple brick structures but some with elaborate carved brick and stucco decoration. Fourteen of these date to the Rasulid period - all of them madrasas - and are the largest group of buildings from this period in Yemen. A network of narrow alleys spreads over the town and its vernacular buildings, typical of the southern Arabian Peninsula, give the town outstanding visual qualities. The houses, built of burnt brick, display similar plans with a reception room, murabba, opening onto an enclosed yard. The larger houses extend upwards to two or three storeys and have fine, elaborate interiors with skilfully carved brick walls, niches and ceilings. The city with its narrow closed streets, traditional houses and minarets is an outstanding example of a homogeneous architectural ensemble that reflects the spatial characteristics of the early years of Islam. Around the town are cemeteries, notably the one to the north-west with a mosque, a well and shady trees. Zabid played an important role in spreading Islam due to its Islamic university (the ancient mosques and madrasas which received students from all over the world to obtain Islamic knowledge and study different sciences (substantially developed by Muslim scientists contributing to the advancement of science). Criterion…