The Great Omari Mosque

The Great Omari Mosque is the largest, oldest mosque and a living heritage in Gaza, still in use before its destruction in 2023.

Situated in the heart of Gaza’s Old City, the Great Mosque of Gaza, also known as Al-Omari Mosque, stands as the oldest and largest mosque in the Gaza Strip. The mosque’s location has historically been a focal point of religious and cultural significance, as the home to various religious structures throughout the millennia, reflecting the layered history of Gaza (Al-Mubayyid, 1995). Initially, it was the site of a Philistine temple dedicated to the god Dagon of a polytheistic religion. During the Roman period, the temple was dedicated to the god Marnas (Al-Mubayyid, 1995).  In the 5th century CE, the Byzantines constructed a church on the site, was later converted into a mosque after the Muslim conquest in the 7th century. In the 12th century, the Crusaders transformed it again into a cathedral, the Cathedral dedicated to St John the Baptist, which was built on the site of the Friday Mosque (Sadeq M, 2025) was also reconverted into a mosque by the Ayyubids (Al-Mubayyid, 1995. Between the 14th and 17th centuries the Mamluks and Ottomans further renovated and expanded the structure, incorporating elements of Mamluk and Italian Gothic architectural styles (.; Britannica, n.d.; Al-Aqsa University, n.d.).

Since then, the Great Mosque has served as a central place of worship and community gathering for centuries. Its expansive courtyard and prayer halls have accommodated thousands of worshippers, and it has been a site for religious education and cultural preservation. The mosque’s architecture, featuring marble columns and a distinctive minaret, reflects the diverse influences that have shaped Gaza’s history (Britannica, n.d.; Al-Aqsa University, n.d.).

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Then

The architectural character of the Great Omari Mosque represents a sophisticated synthesis of symbolic meaning and practical design. Carefully balanced proportions and the interplay of solid and void across the mosque’s fabric foster both spiritual reflection and communal engagement (Al-Mubayyid, 1995). Its façades are rhythmically articulated with recessed panels, arched apertures, and decorative friezes, while fine ornamentation—including carved inscriptions and geometric motifs—demonstrates the layered craftsmanship of successive Islamic periods, particularly the Mamluk and Ayyubid eras (Shehada, 2020). The mosque follows a traditional hypostyle plan with a strong axial emphasis toward the qibla and includes side aisles and ablution zones that facilitate religious rituals (Britannica, n.d.).

Constructed predominantly from kurkar, a coastal Palestinian sandstone shaped into ashlar blocks, the mosque draws deeply from local materials (Al-Mubayyid, 1995). The minaret, a focal architectural element, showcases Mamluk style through its square base and octagonal shaft, enhanced with niches and muqarnas. The original timber-and-tile upper section typified Levantine minaret construction (Shehada, 2020), reflecting the Mamluks’ capacity to blend inherited forms with expressions of their own authority. Internally, the prayer hall is supported by 38 marble columns—many repurposed Roman and Byzantine spolia—carrying groin vaults and pointed arches, reinforcing both verticality and historical continuity (Mosques of the World, n.d.).

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Clerestory windows and perforated stone details support ventilation and daylighting strategies, creating a serene interior atmosphere suited to the Mediterranean environment (Middle East Eye, 2023). Underscoring the mosque’s role as both spiritual sanctuary and civic anchor (Shehada, 2020). This seamless integration of sacred and public realms also speaks to the mosque’s place within Gaza’s broader socio-economic fabric.

The mosque also once housed a distinguished library founded during the reign of Mamluk Sultan Baybars. Although it has faced multiple cycles of destruction and restoration, the library was at one time home to thousands of manuscripts, establishing the mosque as one of Gaza’s earliest centres of learning (Arab News, 2019). Today, both its architecture and layered functions make the Great Omari Mosque a compelling testament to Gaza’s enduring urban, cultural, and intellectual heritage (Mosques of the World, n.d.; Al-Aqsa University, n.d.).

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Now

During the 20th and 21st centuries, the Great Omari Mosque in Gaza City has endured significant challenges, reflecting the broader historical and political upheavals of the region.

In the early 20th century, the mosque suffered considerable damage during World War I when British artillery targeted an Ottoman arms depot housed within its premises. This assault led to the destruction of much of the mosque’s structure, including its renowned library (Irish Times, 2024). Subsequent restoration efforts in the 1920s, overseen by the Supreme Muslim Council, aimed to rebuild the mosque using surviving elements from its diverse historical phases, such as remnants from the Crusader church and Mamluk architecture (Irish Times, 2024). The mosque was largely ruined during the Second World War, although the Supreme Islamic Council renovated it in 1924 (Sadeq M, 2025)

Throughout the mid-20th century, the mosque continued to serve as a central place of worship and community gathering. However, the region’s political instability, particularly following the 1948 Arab-Israeli conflict and the 1967 Six-Day War, posed challenges to the preservation and maintenance of the mosque (Al-Mubayyid, 1995). Despite these difficulties, the mosque remained a symbol of resilience and continuity for the local population.

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The 21st century brought renewed adversity. During an ongoing intense war, on 8th December 2023, an airstrike severely damaged the Great Omari Mosque. It led to the collapse of significant portions of the structure, including its iconic Mamluk-era minaret, and resulted in the loss of invaluable historical and religious artefacts (The Art Newspaper, 2025). As of June 2025 when undertaking this moddeling, the war in Gaza continues. In the aftermath of severe damage to the mosque, both local and international heritage organisations expressed deep concern over the destruction of such a vital cultural and religious site. Efforts have been made to assess the damage and explore possibilities for restoration, though the ongoing war and political complexities in the region continue to pose significant obstacles (The Art Newspaper, 2025).

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Challenges and Reflection

The Great Omari Mosque’s history over the past century underscores the challenges of preserving cultural heritage amid conflict. Its repeated destruction and reconstruction reflect both the vulnerability of historical sites in war-torn regions and the enduring significance these structures hold for the communities they serve throughout their life. The mosque has a layered history and stories behind the location, its physical transformation and use in various beliefs. The tangible and intangible heritage values of the mosque and its location tap into multiple cultural beliefs and communities beyond the region. It belongs to all and efforts for preserving such layered heritages also should go beyond current socio-political divides.

Despite its significance, there are insufficient detailed data, such as measured sections, drawings, or photographs, for many non-key or inaccessible spaces. Such lack of detailed documentation means parts of the mosque could only be modelled based on assumptions. This again highlights the need for sufficient documentation of cultural heritage, especially in areas prone to disasters and destructions.

While their apparent overarching geometry, the Great Omari Mosque, like many other historical buildings, has significant irregular geometrical details such as asymmetrical vaults, uneven columns, and organic forms. For its digital modelling using Revit therefore we had to find the right balance in showing the mosque’s detailed complex fabric and the practicalities of the technical tool for presentation.

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Acknowledgements

We would like to express our sincere gratitude to Shireen Allan, President of ICOMOS Palestine, for proposing the Great Omari Mosque as a case study and providing available documents that enriched the modelling of this work. We are also deeply grateful to Muneer Elbaz, Lecturer at the University College of Applied Sciences in Gaza, for his invaluable contribution, particularly in sharing a collection of historical and contemporary photographs that offer unique insights into the architectural condition of the mosque before its destruction.

Bibliography

  • • Al-Mubayyid A.S. (1995), Islamic Historical Buildings in Gaza and its Strip, Egyptian General Book Authority, Cairo. (In Arabic)
    • Al-Aqsa University (n.d.) The Great Mosque of Gaza. Available at: https://alaqsa.edu.ps/en/newsdetail/1/317/The_Great_Mosque_of_Gaza (Accessed: 14 June 2025).
    • Al Jazeera (2024) A cultural genocide: Which of Gaza’s heritage sites have been destroyed? 14 January. Available at: https://www.aljazeera.com/news/2024/1/14/a-cultural-genocide-which-of-gazas-heritage-sites-have-been-destroyed (Accessed: 14 June 2025).
    • Arab News (2019) Gaza’s historic mosque once had thousands of books. 31 May. Available at: https://www.arabnews.com/node/1503371/middle-east (Accessed: 14 June 2025).
    • Britannica (n.d.) Great Mosque of Gaza. Available at: https://www.britannica.com/topic/Great-Mosque-of-Gaza (Accessed: 14 June 2025).
    • Irish Times (2024) Gaza’s historic heart: the Great Omari Mosque lies in ruins. 21 June. Available at: https://www.irishtimes.com/world/middle-east/2024/06/21/gazas-historic-heart-the-great-omari-mosque-lies-in-ruins (Accessed: 14 June 2025).
    • Middle East Eye (n.d.) Palestine: Gaza’s hidden heritage – five historic sites. Available at: https://www.middleeasteye.net/discover/palestine-gaza-hidden-heritage-five-historic-sites (Accessed: 14 June 2025).
    • Mosques of the World (n.d.) Great Omari Mosque of Gaza. Available at: https://www.mosquesofthe.world/post/great-omari-mosque-of-gaza (Accessed: 14 June 2025).
    • Sadeq M., Great ‘Umari Mosque (Gaza, Palestine), Museums without Frontiers, [https://explore.museumwnf.org/countries/c-pa/l-38/m-826/lan-en], (Accessed: 2 August 2025)
    • Shehada, Z.M. (2020) ‘The Reflection of Interreligious Coexistence on the Cultural Morphology of the Grand Omari Mosque in Gaza’, Journal of History Culture and Art Research, 9(4), pp. 146–163.
    • The Art Newspaper (2025) Gaza’s heritage experts warn of ‘huge’ reconstruction effort. 10 March. Available at: https://www.theartnewspaper.com/2025/03/10/gaza-heritage-experts-huge-reconstruction-effort (Accessed: 14 June 2025).

The images and architectural modelling shown here are for illustration purposes only and may not be an exact representation of the property. Silk Cities is not liable for subsequent updates, errors, or omissions of data or any updates on the conservation of the property afterwards.

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