Minbar of Bursa Ulu Camii

The Minbar of Bursa Ulu Camii is a wooden architectural element constructed from walnut wood using the kündekâri technique within Bursa Grand Mosque, built during the reign of Yıldırım Bayezid. It is regarded as one of the leading examples of wooden minbar art in Anatolia due to its geometric and botanical decorations, the combined use of different techniques, and its rich variety of compositions.

The minbar is the work of the master craftsman Hacı Mehmed, son of Abdülaziz, son of Dakku. Its construction technique and ornamentation reflect similarities with stonework of the period and exemplify the use of kündekâri, low relief carving, and latticework carving techniques.

Bursa Ulu Camii Minbar (Hayalhanem İstanbul)

Historical Background

The Bursa Ulu Camii and its minbar are part of the architectural activities of Yıldırım Bayezid (1389–1402), a ruler whose reign marked a critical phase in the Ottoman state’s transition from a principality to an empire. During this period, the Ottomans established dominance over Anatolian beyliks, achieved significant territorial gains in the Balkans, and consolidated their legitimacy through military victories such as the Battle of Nicopolis. Following these developments, Yıldırım Bayezid requested the title “Sultanü’l-Rum” from the Abbasid caliph in Cairo.

Yıldırım Bayezid undertook large-scale construction projects in centers such as Edirne, Bergama, and Bursa. In Edirne he commissioned a zawiya bearing his name; in Bergama, a grand mosque; and in Bursa, an extensive külliye. This külliye comprised a mosque, a zawiya, an imaret, a bathhouse, two madrasas, a darüşşifa, and a zawiya for the Kazerunî dervishes. The Bursa Ulu Camii, located at the center of this complex, is the most comprehensive structure among these constructions.

The architect of the mosque is not definitively known, but it is believed to have been designed by the architects Hacı Alâaddin and Ömer b. İbrahim. These two architects had previously worked on the külliye commissioned by Yıldırım Bayezid during his princely years in Mudurnu and on the Edirne Eski Camii. The construction of the mosque was affected by the political and economic instability following the Battle of Ankara (1402) and the ensuing Interregnum; the building was completed by Yıldırım Bayezid’s sons.

The minbar of the Bursa Ulu Camii, as part of this period’s activities, was commissioned by Yıldırım Bayezid in 802 AH (1399–1400). The inscription on the minbar reads:

"Mimma umile bi resmi’s-sultâni’l-muazzam Bayezid bin Murad Han bi-tevfîkihi sene semân mie ve isneyn."

(This minbar was constructed in the year 802 by the command of the exalted Sultan Bayezid, son of Murad Han, with the grace of God.)^【1】

Additionally, the name of the craftsman is inscribed on the railing panels of the western façade. According to this inscription, the minbar was made by Hacı Mehmed, son of Abdülaziz, son of Dakku. The direct inscription of the artisan’s name on the minbar is noteworthy in the context of the period’s practices.

General Features of the Minbar

The minbar of the Bursa Ulu Camii is one of the most advanced and monumental examples of kündekâri technique in Anatolian Turkish woodworking. All components of the minbar are made entirely of walnut wood and assembled using a mortise-and-tenon system without nails or adhesive.

Every surface of the minbar is adorned with geometric patterns and botanical motifs executed in the kündekâri technique. The ornamentation combines low relief carving, latticework carving, and mother-of-pearl inlay. Geometric designs feature star motifs with eight to fourteen points; the simultaneous use of stars with different numbers of points on the same surface enables rich compositional variety. Some stars are formed with straight strips, others with curved strips shaped like circular arcs, and some central bosses are rendered as hemispherical protrusions.

The surface decorations include classical botanical motifs such as rûmî, palmette, kıvrıkdal, lotus, and bud forms in the hatayi style. These motifs are intricately carved using both relief and latticework techniques. The structure is regarded not merely as liturgical furniture but as one of the foremost examples of early Ottoman wooden art, distinguished by its technical mastery and aesthetic composition.

Eastern Façade

Although the eastern façade shares structural similarities with the western façade, it exhibits greater complexity in ornamentation density and compositional variety. The techniques of kündekâri, low relief carving, and latticework carving are all employed here in combination.

Below the balustrade, a rhythmic arrangement of three-leaf flowers with serrated tips encircled by segmented rûmî motifs is found. These motifs are designed in a bowl-like form with veined surfaces.

The triangular pediment is covered with a geometric arrangement based on broken-line systems composed of nine-, ten-, and twelve-pointed stars. Some star centers are emphasized with hemispherical bosses, while some arms are shaped as circular arcs. The intervening surfaces are filled with rûmî and palmette scrolls; certain areas feature mother-of-pearl inlaid geometric motifs.

On the eastern façade, above the balustrade, a horizontal rectangular panel is placed. This panel is divided into three pointed arches arranged side by side. Within each arch opening, segmented rûmî, scrolling vines, lotus blossoms, and three-leaf palmettes are carved in low relief.

The rectangular panel beneath the pulpit platform features a broken-line geometric arrangement composed of eleven-, nine-, and ten-pointed stars. The lowest eleven-pointed star is larger than the others. The spaces between the stars are filled with rûmî and palmette scrolls. The panel is framed by a border composed of segmented rûmî motifs with spiral ends.

Eastern Façade of the Bursa Ulu Camii Minbar, II. Abdülhamid Collection (Bursa Municipality City Archive)

The pulpit railing is executed in latticework carving. The openwork panel, bordered by botanical motifs at top and bottom, consists of a twelve-pointed star arrangement inscribed within a hexagon. The eastern façade stands out as one of the richest sections of the minbar, particularly in terms of motif variety, ornamentation density, and technical diversity.

Railing Detail (Hayalhanem İstanbul)

Western Façade

The western façade comprises the base balustrades, triangular pediments, and panels beneath the platform. This façade contains a total of fifteen recessed arched niches. Each niche is framed by botanical borders composed of rûmî-palmette combinations at top and bottom. The rûmî and palmette motifs in these borders are arranged in closed forms surrounding three-leaf palmettes; the leaf surfaces are serrated, veined, and shaped with triangular profiles.

The triangular pediment is decorated with a geometric pattern based on a broken-line system of infinite character, highlighting twelve- and eight-pointed star motifs. Some star centers are raised as bosses, while some star arms are shaped as circular arcs. The hexagonal surfaces between the stars are adorned with segmented rûmî and three-leaf palmettes. In the centers, palmettes crowned with rûmî stems and circular rosettes are placed.

The rectangular panel beneath the platform features a geometric arrangement of fourteen-, thirteen-, eleven-, and nine-pointed stars arranged vertically. At the center of the lowest fourteen-pointed star is a seven-pointed star made of mother-of-pearl inlay. The spaces between the stars are filled with relief rûmî-palmette motifs. Above this panel, a horizontal band features the phrase “Mülk Allah’ındır” (The Sovereignty belongs to God) repeated three times in kûfi script and gilded.^【2】 Above this inscription band is another panel containing a closed geometric arrangement composed of ten-pointed stars.

The railing of the western façade consists of six panels.

• The diagonal panels at the ends are executed in latticework carving and feature octagonal and polygonal transitions.
• The second, fourth, and sixth panels consist of ten-pointed star compositions carved in low relief.
• The third and fifth panels are decorated with geometric weaves formed by strips and executed in latticework carving.

Western Façade Close-up Detail (Hayalhanem İstanbul)

Art Historical and Symbolic Layers

Some studies have associated the star arrangements on the eastern triangular panel with cosmological or universal conceptions, suggesting links to the solar system. However, no direct or historically verifiable parallel can be established between these geometric decorations and philosophical interpretations of the cosmos. The presence of eight distinct star forms on the same plane enhances the artistic composition, but it remains uncertain whether these arrangements were intended to convey symbolic meaning or to achieve visual balance.^【3】

Medieval Islamic thought proposed various conceptions of the universe’s structure. For instance, Ibn Sina and his contemporaries described the cosmos as composed of nine celestial spheres, while the Ikhwān al-Ṣafā argued that their movements occurred in perfect circular cycles. Similarly, the Ottoman thinker Davud-i Kayserî, in his commentary on Muhyiddin-i Arabî’s work, stated that the universe consisted of nine spheres; Yazıcızâde Ahmed Bîcân, in his treatise Dürr-i Meknûn, elaborated on this classical celestial model. No definitive evidence connects the minbar’s star compositions to these cosmological views.

Even if one assumes the minbar was planned according to such a cosmological scheme, it remains unclear whether this plan originated with the patron or the artisan. On the other hand, since the minbar represents the person delivering the sermon, it is plausible that symbolic meanings were intentionally assigned to this arrangement.

Evliya Çelebi’s writings contain no direct references to such interpretations, suggesting that some of these readings may be later scholarly constructs rather than historically grounded understandings. Within this framework, art historians have also evaluated the potential symbolic meanings of the minbar’s geometric and botanical compositions alongside its aesthetic unity and technical excellence.

Contemporary Interpretations and Astronomical Debates

Some assessments have suggested that certain star-like arrangements on the minbar may be linked to astronomy. Former Mayor of Old Bursa Recep Altepe invited astronomy experts to the city in 2017, asserting that the solar system was depicted on the minbar and that this composition was connected to Qāḍīzāda al-Rūmī and Molla Fenārī. According to Altepe, the solar system was represented on the minbar in 1399, approximately 230 years before Galileo’s discoveries, and even included Pluto, which was not discovered until 1930.

Dr. Bülent Yaşarsoy, former Astronomy Consultant at the Old Bursa Science and Technology Center, noted that the shapes on the minbar resemble celestial bodies but that a scientific correlation between these forms and actual planets has not yet been established.