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Hagia Sophia restoration and conservation

Updated 2 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-10 13:46 UTC → 2026-10-03 09:35 UTC · added removed

The Hagia Sophia in Istanbul is a historical monument representing the architectural intersection of Christian and Islamic history. Originally a Byzantine cathedral commissioned by Emperor Justinian I, it was converted into a mosque following the Ottoman conquest in 1453. Recent developments involve a major restoration project at Restoration efforts have progressed into what is described as one of the Hagia Sophia Grand Mosque. Following advanced modeling most extensive projects in the history of the Republic. Current works focus heavily on the dome structures. On the main dome, crews are removing and static analysis, experts identified repairing lead coverings and performing structural reinforcement. To protect the interior mosaics and the structure from seasonal weather, a critical need temporary steel roof covered with flame-retardant grey protective tarpaulin has been installed; this covering was specifically selected to harmonize with the appearance of the original lead. A 43.5-meter steel platform is being utilized to facilitate mosaic conservation on the main dome. Simultaneously, the project has entered a phase to reinforce the eastern semi-dome, which is considered was identified through structural analysis as a vulnerable point in potential earthquake scenarios. This phase involves the installation of installing a steel working platform to allow for structural strengthening and the conservation of mosaics, calligraphy, and marble surfaces. To protect the site's historical integrity, specialized printed tarpaulins will be used to maintain visual continuity, specialized printed tarpaulins are being used, and a multi-layered floor system will be implemented to protect protects the original 1,500-year-old marble flooring. Simultaneously, restoration efforts continue on the main dome, including mosaic conservation using ‘facing’ techniques and the installation of a temporary steel roof. The Ministry of Culture and Tourism has stated that these comprehensive works, overseen by Tourism, overseeing the works via a scientific committee, are being conducted according to a strict schedule to ensure the monument is preserved for future generations. Religious maintains that religious services and visitor access will continue through temporary arrangements, including such as the use of temporary mihrabs and minbars.

Versions

  1. 2026-10-03 09:35 UTC Hagia Sophia restoration and conservation
  2. 2026-09-10 13:46 UTC Hagia Sophia restoration and conservation
  3. 2026-09-10 10:09 UTC Hagia Sophia restoration and conservation

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