ABSTRACT
UNESCO recognized the importance of rammed earth architecture by declaring the cities of Shibam and Sana’a Yemen as world heritage sites. The cities and the set of the Citadel and the Nasrid Palaces of the Alhambra are built entirely of earth. We mean by extension, that the earthen architecture acquires a condition of heritage inherent in its construction process, which is strongly linked to its typological and formal repertoire (Fig. 1).
