In brief
The value of the historic district lies in the combination of buildings and the connections between them.
Useful to know
The Casbah of Algiers is a historic urban environment where remains of a citadel, old mosques, Ottoman palaces and traditional dwellings are found. UNESCO views it as an ensemble, not a single palace. [1]
When looking at a plan or photos, trace the relationship between housing groups and public places. A monumental facade shows only part of the device. The architectural significance is also revealed in the scale of daily habitation: how the street leads to the home and how the larger religious or fortified building fits among the dwellings.
Sources
For further detail and to check the information: