Ibn Tulun Mosque is both the oldest and the largest mosque in Cairo. In view of its architectural and social importance, its restoration proceeded according to the principle of minimal intervention, respecting the original fabric while erasing the damage caused by previous works (for example, by removing the earlier cement mortars that had given rise to cracks). More than 350 people were involved in the project. Working with foreign experts, they had the opportunity to gain experience in a broad range of techniques, in the process significantly advancing the skill base for conservation in Egypt.
Restoration of Ahmad Ibn Tulun Mosque On-site Review Report, edited by Aga Khan Award for Architecture, 2010.
The On-site Review Report, formerly called the Technical Review, is a document prepared for the Aga Khan Award for Architecture by commissioned independent reviewers who report to the Master Jury about a specific shortlisted project. The reviewers are architectural professionals specialised in various disciplines, including housing, urban planning, landscape design, and restoration. Their task is to examine, on-site, the shortlisted projects to verify project data seek. The reviewers must consider a detailed set of criteria in their written reports, and must also respond to the specific concerns and questions prepared by the Master Jury for each project. This process is intensive and exhaustive making the Aga Khan Award process entirely unique.