Osman Shah Mosque: An Ottoman Mosque in Trikala, Greece
Site at a Glance
- Rating
- 4.4
- Popularity
- Low
- Country
- Greece
- Primary era
- Early Modern
- External website
- Open
- Eras represented
- Early Modern
- Civilizations
- Ottoman
- Site type
- Religious
- Remains
- Mosque
On this page10 sections
History
Osman Shah Mosque, also known as the Kursum Mosque, is a sixteenth-century Ottoman mosque in Trikala, Greece, built during the Ottoman period in the 1550s and probably the late 1550s. Its Turkish-derived name means “Leaden Mosque,” referring to the lead covering of its dome. The building is attributed to Mimar Sinan, the chief imperial architect of the Ottoman Empire, and is described as the only surviving work attributed to him in modern Greece.
Foundation and Ottoman Use
The mosque was commissioned by Osman Shah, also known as Kara Osman Pasha, an Ottoman dignitary who served for many years as governor of the sanjaks of Trikala and Lepanto. A sanjak was a provincial administrative district governed on behalf of the Ottoman authorities. Construction is generally placed in the mid-sixteenth century, with alternative dating around 1566 and completion in 1570. Osman Shah died in 1567 or 1568 and was buried in the funerary mausoleum associated with the mosque.
The mosque formed the central religious building of a larger charitable complex. This included a madrasa, an institution for Islamic religious and scholarly education, an imaret that distributed food, a khan or caravanserai for travelers and merchants, and baths. These associated buildings supported religious, educational, charitable, and commercial activity around the mosque.
About a century after its construction, the Ottoman traveler and writer Evliya Çelebi described the building during his visit to the region. By that time, it was the principal mosque of Trikala. It is now the only mosque still standing in the city out of at least eight that Çelebi reported.
Decline and Preservation
The mosque remained relatively intact until the end of Ottoman rule. Its dome may have been rebuilt in the nineteenth century after an earthquake. The building ceased to function as a mosque around the 1890s, and conflicts later affected its condition. During the early twentieth century it was used as a fodder store and stable, while its entrance portico collapsed.
Osman Shah Mosque was designated a historic monument in 1936 and is protected as an archaeological site in Greece. A major restoration during the 1990s reconstructed the collapsed portico, with work completed in 1998. The former mosque is administered by the Greek Ministry of Culture and is used for cultural exhibitions.
Remains
The mosque stands beside the Lithéos River. Its square prayer hall is built with alternating courses of greenish limestone ashlar, or regularly cut stone blocks, and three courses of brick. This cloisonné construction technique combines stone courses with surrounding bands of brick. The surviving complex also includes the founder’s mausoleum, while the other associated buildings have disappeared.
Prayer Hall and Exterior
Prayer Hall and Dome
The prayer hall measures 21.4 metres on each side, including its walls. Three facades have three rows of windows, while the eastern qibla wall, the wall oriented toward Mecca, has two windows at the lower level. On the upper level of each of the three principal facades, a rectangular central window is flanked by two circular windows.
A large octagonal dome covers the hall, rising on pendentives, curved supports that carry a dome over a square space. The entirely brick-built dome has a diameter of 18 metres and an exterior height of 22.5 metres. It is covered with lead and rests on a drum pierced by eight windows. Pairs of buttresses reinforce each of the four pendentives. The dome is described as the largest in Greece.
Portico and Minaret
The front portico extends beyond both sides of the prayer hall and measures 24.57 metres in length. Six columns with Turkish capitals support it, while five small domes rest above the roof on pendentives. The portico was completely reconstructed during the 1990s restoration.
The upper edges of the facades have projecting eaves made from two saw-toothed rows of tiles. At the northwestern corner, a stone minaret survives to a height of approximately 23 metres, although its roof is missing. The minaret was incorporated into the symmetry of the main facade. A small door at the northwestern end of that facade provides access to it.
Interior Features
Entrance and Prayer Furnishings
The white-and-green marble entrance portal once bore a dedicatory inscription that has disappeared. A window stands on each side of the entrance, with each window positioned between two niches. Inside, the central mihrab, the prayer niche marking the direction of Mecca, is richly painted. The mosque’s notable minbar, or raised pulpit for the sermon, has been lost.
A raised wooden gallery, four metres wide, runs along the full length of the main facade. Two stairways built into the wall on either side of the entrance lead to it. Acoustic vessels are embedded in the interior wall at the level of the pendentives. Their use reflects a technique also found in Byzantine architecture.
Founder’s Mausoleum
The founder’s octagonal türbe, an Ottoman funerary mausoleum, stands 13.2 metres southeast of the mosque in the southern courtyard. Built of stone and brick, it is covered by a lead dome. The mausoleum is used to store artefacts recovered from archaeological excavations and remains the principal surviving associated structure of Osman Shah’s former charitable complex.
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