As such the old walled city of Shibam and its setting in Wadi Hadramaut constitute an outstanding example of human settlement, land use and city planning. Criterion (iv): Surrounded by a fortified wall, the historic city of Shibam is one of the oldest and best examples of urban planning based on multi-storeyed construction. The attributes that carry Outstanding Universal Value including the city layout, the city skyline, the city wall, the traditional buildings, and the relationship between the city and its surrounding landscape continue to be maintained. Protection and management requirements (2011)The protection of the Old City of Shibam is ensured by the Antiquities Law of 1997 as well as the building law of 2002. As a result, GOPHCY Shibam has been able to manage a housing rehabilitation programme that succeeded in documenting 98% of the traditional housing in Shibam and rehabilitating more than 60% of the private traditional houses.