Photos from a 2019 trip to Algeria, specifically part of a day trip from El Bayadh to Ain Sefra and back, stopping in the Ksar de Boussemghoun (more links here) on the way. The city dates back over a thousand years and played host to religious conferences in the middle ages.
The following images are from the scholarly paper Le Ksar de Boussemghoun: Identification de son Patrimoine et Perspectives de Promotion du Tourisme Saharien (roughly “Identification of Heritage and Perspectives of Saharan Tourism Promotion”) by M.H. Ait Saadi, B. Remini, A. Farhi. While this paper includes a wealth of survey data, I am unclear if there is any relation between their work and the oversized spaceframe canopy covering the building restoration site (paper published June 2017, photos above taken June 2019).
Adam Achrati 
Terrific pictures! ________________________________