This is a true cataloguing project, in the sense that it develops this cognitive activity which necessarily precedes the heritage protection and development activities. The work, “Yemen-urban management project Inventory of cultural heritage priority sites”, is financed by the Italian Foreign Ministry and managed by the World Bank in coordination with the Yemeni Institutions and under GOAMM’s scientific direction. Its aim is to test and set up the two levels above mentioned in order to realise a “unique heritage register” by means of a central office and an initial regional one.