Uthman bin Affan Mosque/Photo: SPA

Nestled among the narrow medieval alleys of historic Jeddah, the Uthman bin Affan Mosque offers a rare, layered look into the city’s past. The latest excavations at the site have revealed more than 1,300 years of continuous history, linking early Islamic foundations to global trade routes and evolving architectural traditions, the Saudi Press Agency reported.

The origins of Uthman bin Affan Mosque date back to 33 AH (654 AD), making it one of the oldest archaeological and religious landmarks in Jeddah. Its historical importance is directly linked to Caliph Uthman ibn Affan, who designated Jeddah as a major Islamic port. This decision made the city an important gateway for pilgrims to Mecca and a center for maritime trade.Located among ancient lanes and surrounded by traditional buildings, the mosque has been in continuous use for more than 1,300 years. This uninterrupted use highlights not only its religious significance but also its role in daily life in the city over the centuries.The mosque’s longevity reflects how Jeddah grew with it, from an early Islamic settlement to a prosperous port city connecting different parts of the world.

Recent excavations have revealed that the mosque contains multiple historical layers, each corresponding to a major Islamic period. These layers confirm that the site remains active in terms of:

In total, these periods range from 41 AH (661 AD) to 923 AH (1517 AD), representing nearly a thousand years of continuous development and use.During the Umayyad period, early coral stone foundations and port-related developments supported an increasing number of pilgrims and traders. At that time, Islamic rule was rapidly expanding from Spain to India, and Jeddah began to establish itself as an important maritime hub.Under the Abbasid rule, often referred to as the Golden Age of Islam, the region experienced advancements in science, knowledge, and infrastructure. Evidence from the mosque, including glass lamps and aqueducts, suggests that both the mihrab and the water system were improved. These developments demonstrate that Jeddah was not only a trading center but also part of a wider intellectual and cultural network across the Red Sea.The Mamluk era brought further changes. Known for their military prowess and control of trade routes, the Mamluks fortified Jeddah. Discoveries from this period, including ebony and porcelain fragments imported from Ceylon, indicate an increase in commercial activity and long-distance trade. During this period, the mosque developed into a resilient structure within a fortified, economically active port city.

One of the most important findings of the excavation was a complex water supply system dating back approximately 800 years. The system reflects advanced engineering techniques used to manage water resources in coastal environments and demonstrates a high level of urban planning and technical knowledge.Also noteworthy are the rare ebony pillars found in the mihrab. Scientific analysis traced the material back to ancient Ceylon (now Sri Lanka), providing clear evidence of Jeddah’s historical maritime trade links across the Indian Ocean.The discovery of early Chinese porcelain among thousands of artifacts unearthed from the site further strengthens this claim. The objects confirm that Jeddah was part of a vast trade network linking the Middle East to Asia.Together, these findings indicate that the mosque was more than just a place of worship. It functions as a point in a wider system of trade, travel and cultural exchange, reflecting the city’s importance on global sea routes.

Ebony Column/Photo: SPA

The mosque went through seven different construction phases, all of which have now been digitally documented. This detailed document provides insights into how the structure adapts over time in response to changing needs and impacts.Construction techniques observed during these phases highlight traditional coastal building methods and include:

Each phase represents a stage in the development of the mosque, whether it is an expansion, restoration or renovation. These changes reflect both functional needs and the impact of different historical periods.The digital preservation of these phases ensures that the mosque’s architectural history is recorded in detail, allowing researchers and visitors to better understand its transformation over the centuries.

Today, the Uthman bin Affan Mosque remains a place of worship and cultural landmark. It has become an important destination on Jeddah’s cultural route, attracting tourists interested in the city’s history and heritage.The site blends Islamic history with contemporary cultural activities, creating a space that actively preserves the past while remaining relevant to the present. This approach supports wider efforts to preserve the Kingdom’s architectural character and historical heritage.What is particularly important about this mosque is its continuity. It is not an abandoned or isolated ruin. Instead, it remains an active part of the city, carrying on a legacy of over 1,300 years.

The discovery of the Mosque of Uthman bin Affan details the evolution of Jeddah. The mosque reflects the city’s development over the centuries, from its early days as a designated Islamic port to its role in global trade networks.From the coral stone foundation to the imported ebony and porcelain, each layer has been uncovered to add to the story. It shows how religion, commerce and everyday life intersected in a place, shaping the mosque and the city around it.In short, the site is a living record of history. It connects early Islamic foundations with medieval trade routes and modern conservation efforts, making it one of the most important cultural and historical landmarks in Jeddah today.