Reviving the Urban Heritage of the Algerian Sahara: Restoration and Sustainability of Earthen Architecture in Ksar Khanguet Sidi Nadji as a Case Study

Earthen architecture, an enduring legacy of human ingenuity, has historically served as a source of durable and sustainable shelter across civilizations. Despite this significance, several of the world’s earthen architectural sites are now facing abandonment and obsolescence, as is the case of Ksar Khanguet Sidi Nadji in the Algerian Sahara. To address this critical situation, we propose a sustainable, eco-friendly, and cost-effective solution for the restoration of the urban fabric of the Ksar that takes into account the needs of its residents and its heritage value. Our approach utilizes the anastylosis method which implies that we reuse original on-site components as building materials whenever possible. We introduce new materials only when necessary, after subjecting them to rigorous testing and control. Additionally, we take into account the complex challenges of human, natural, and technical factors involved in the restoration process, offering a practical solution to restore and preserve the earthen heritage of the Ksar while benefiting its residents.