From Imperial Foundation to Living Monument
The History of Bursa Grand Mosque
Discover how Ulu Camii became one of the most important monuments of early Ottoman Bursa.
Bursa Ulu Camii was commissioned by the Ottoman sultan Yıldırım Bayezid I during a period of rapid imperial growth. Construction is generally dated to 1396–1400, and the inscription above the minbar records completion in the Islamic year 802, corresponding to 1399–1400.
A well-known local tradition connects the mosque with Bayezid’s victory at the Battle of Nicopolis in 1396. According to the story, the sultan intended to build twenty separate mosques in gratitude for the victory, but Emir Sultan advised him to create a single monumental mosque with twenty domes instead. The story is an important part of Bursa’s cultural memory, although it should be understood as a traditional narrative rather than a fully documented construction record.
Ulu Camii was designed as a vast congregational mosque for the expanding Ottoman capital. Its broad hypostyle interior, multiple domes, central opening, and monumental scale represent a major stage between earlier Seljuk congregational mosques and the later centrally planned imperial mosques of Istanbul and Edirne.
The mosque is traditionally attributed to the architect Ali Neccar, although surviving historical evidence does not provide a complete modern-style architectural record. The building’s first imam is remembered as Süleyman Çelebi, the author of the celebrated Turkish devotional poem Vesîletü’n-Necât, commonly known as the Mevlid.
Over the centuries, the mosque suffered damage from warfare, fire, severe winds, and earthquakes. The 1855 Bursa earthquake was particularly destructive and caused eighteen of the twenty domes to collapse. Major repairs followed, and several of the mosque’s present calligraphic decorations were restored, reorganised, or added during nineteenth-century rebuilding campaigns.
Twentieth-century conservation removed later plaster from parts of the exterior and restored the mosque’s cut-stone appearance. Today, Ulu Camii remains both an active place of worship and one of Bursa’s most visited cultural monuments, standing within the historic commercial landscape associated with the city’s UNESCO-listed early Ottoman heritage.