Ottoman Architecture: Mosques, Palaces, and the Sinan Tradition

Ottoman architecture shaped the skylines of three continents for more than five centuries. Its domes, pencil minarets, and cascading half-domes became the visual signature of the empire; its monuments — from the Süleymaniye in Istanbul to the Selimiye in Edirne, from Topkapı to the bridge at Mostar — defined the cities in which millions of Ottomans lived, worked, prayed, and traded. This article surveys the main forms, periods, and architects, and complements the broader overview of Ottoman society and culture.

Key dates

1337 — Orhan Gazi’s first Hammam in Bursa, one of the earliest surviving Ottoman structures.
1453 — Mehmed II captures Constantinople; the empire inherits the Byzantine building tradition, including Hagia Sophia.
1463–1470 — The Fatih Mosque in Istanbul, first great imperial külliye, by the architect Atik Sinan.
1550–1557 — Sinan builds the Süleymaniye.
1568–1574 — Sinan builds the Selimiye in Edirne.
1718–1730 — Tulip Period; European Baroque enters the imperial vocabulary.
1755 — Nuruosmaniye Mosque, the first large mosque in a recognizably European Baroque idiom.
1856 — Dolmabahçe Palace completed; Topkapı ceases to be the principal imperial residence.

The classical tradition

Ottoman architecture matured in the late 15th and 16th centuries into the classical style. The key monument of the early period is the Fatih Mosque (1463–1470) in Istanbul, built by the architect Atik Sinan on the ruins of the Church of the Holy Apostles for Sultan Mehmed II. The Fatih was the first great imperial külliye — mosque, medrese, hospital, soup kitchen, library, bath, and caravanserai — and it set the template for the imperial religious foundations of the next three centuries.

The classical idiom reached its full maturity in the work of Mimar Sinan (c. 1488/90–1588), the chief architect of Süleyman the Magnificent and his successors. Drawing on Hagia Sophia, on Seljuk and Mamluk precedents in Anatolia and Egypt, and on the engineering traditions of the Ottoman carpentry shops, Sinan produced a vocabulary of vast central domes, slender pencil minarets, cascading semi-domes, and light-filled interiors that the empire’s later architects sought to emulate. Modern scholars are split on whether the Süleymaniye is fundamentally a Byzantine building (Godfrey Goodwin) or a self-conscious rejection of Hagia Sophia (Doğan Kuban). I lean toward Kuban: Sinan in his Tezkiretü’l-Bünyan complains that the Hagia Sophia’s buttresses are an eyesore, and the Süleymaniye is built without them.

The three works Sinan himself considered his masterpieces are the Şehzade Mosque (1548) in Istanbul, the Süleymaniye Mosque (1557) in Istanbul, and the Selimiye Mosque (1574) in Edirne. The Selimiye, with a single great dome of 31.28 m on eight massive piers, is technically the most audacious, and the Süleymaniye the most balanced.

The mosque

The classical Ottoman mosque was, in form, a square prayer hall roofed by a central dome, generally preceded by a courtyard (avlu) with a fountain for ritual ablutions. The walls of the prayer hall were pierced with windows in tiers, and the interior was plastered and painted with Qur’anic inscriptions, geometric and arabesque ornament, and stylized floral and cloud-band designs. The mihrab niche indicated the direction of Mecca; the minbar — a tall pulpit — stood to its right.

The most distinctive external feature of the imperial mosque was the pencil minaret: a tall, fluted, sharply pointed tower of white cut stone, often capped with a conical lead cap. A mosque of imperial foundation typically had four minarets; a mosque founded by a grand vizier, two; a neighborhood mosque, one, or none at all.

The smaller neighborhood mosque, the mescid, was the most common form of religious building. A simple square, domed structure with one or two windows, no minbar, and no pulpit — a place for the five daily prayers and little more. In Istanbul alone there were several thousand such mosques by the 17th century.

The külliye

The imperial külliye was the most ambitious form of Ottoman religious patronage. It was a complex of buildings grouped around a central mosque, financed by an evkaf — a pious endowment — and administered as a single institution. The standard külliye included:

the mosque itself;
one or more medreses for higher religious education;
a darüşşifa (hospital) and tabhane (guesthouse for the sick and the travelling poor);
a tıp medresesi (medical school) and eczane (pharmacy);
an imaret (soup kitchen) that fed the poor, the students, and the travelers of the neighborhood;
a hamam for the staff and the public;
a kervansaray (caravanserai) for the lodging of merchants and their goods;
a sıbyan mektebi (primary school);
and sometimes a library, a fountain, a clock tower, or a türbe (mausoleum) for the founder.

The Süleymaniye Külliyesi, built by Sinan between 1550 and 1557, is the most complete surviving example. The mosque, the four medreses, the hospital, the caravanserai, the hamam, and the imaret are all still standing, and the complex is still in use. Aptullah Kuran’s reading of the külliye, in The Mosque in Early Ottoman Architecture (1968), is that the Süleymaniye is Sinan’s most fully resolved plan; Gülru Necipoğlu’s, in The Age of Sinan (2005), is that the Selimiye is. The two are not in fact in conflict — the Süleymaniye is the more balanced urban ensemble, the Selimiye the more daring single building.

Palaces

The sultans had many residences, but the most important were the Topkapı Palace in Istanbul, the Edirne Palace in Edirne (largely destroyed), and the Dolmabahçe Palace on the Bosphorus, together with a series of waterside pavilions, hunting lodges, and seasonal palaces across Thrace and Anatolia.

Topkapı was the main imperial residence from 1465 to 1856, and the political and ceremonial center of the empire for almost four centuries. Its plan, organized into four courtyards, mixed private apartments, government offices, the treasury, the library, the harem, and the barracks of the inner palace service. The Harem — the household of the sultan, his mother, his consorts, and his children — occupied a separate walled quarter at the back of the palace, with its own courtyards, bath, school, and mosque. The daily routines of this quarter are described in life in the imperial harem; the broader household and the dynasty in the Ottoman family article.

Dolmabahçe, completed in 1856, replaced Topkapı as the principal imperial residence and signaled the empire’s adoption of European architectural forms. The long Baroque–Rococo palace on the Bosphorus, designed by the Balyan family of Armenian architects, is one of the largest palace buildings in the world, and its crystal staircase, the huge Bohemian crystal chandelier (a gift of Queen Victoria), and the Hereke carpets and silk wall coverings represent a very different aesthetic from the austere classical Ottoman style of Sinan.

Bridges, fountains, bazaars, infrastructure

Sinan and his successors designed hundreds of civil engineering works. The bridge of Büyükçekmece (1567), the Drina bridge at Višegrad (1571–1577), and the Mostar bridge in Herzegovina (1557–1566) are the most famous. The Mostar bridge is the work of Mimar Hayruddin (or Hayreddin), a student of Sinan’s office, executed on commission of Süleyman; it has often been attributed to Sinan himself, but the contemporary evidence points to Hayruddin. These long, multi-arched stone bridges carried imperial roads across the rivers of the Balkans and Anatolia. The Mostar bridge, destroyed in 1993, was rebuilt in 2004 using the original Ottoman plans and many of the original stones.

The Ottoman han (caravanserai) was a related building type, providing lodging for merchants and their goods along the imperial road. The great hans of Bursa, of the Anatolian caravan routes, and of the spice road through Aleppo and Damascus are some of the most impressive surviving examples. The Grand Bazaar of Istanbul, founded in the 15th century and enlarged over the centuries, has sixty-one streets and more than four thousand shops.

The sebil and the çeşme — the public fountain and the public drinking fountain — were a distinctive form of Ottoman public architecture. The türbe — the mausoleum of a sultan, a grandee, or a saint — was a further important form. The most famous example is the Tomb of Süleyman the Magnificent beside the Süleymaniye, designed by Sinan as an octagonal chamber that he said he had “modeled on the tent of the Prophet.”

“The dome of the Selimiye is wider than the dome of Hagia Sophia, and its supports are but eight elephants of stone. Inside, the prayer hall is one single great room, undivided, and the voice of the imam is heard from the mihrab as clearly as if he were speaking into the listener’s ear.” — Evliya Çelebi, Seyahatname, Vol. 3 (c. 1650), on the mosque at Edirne

Provincial architecture

The classical style was rapidly exported to the provinces. The mosques of the Sandžak region of Bosnia, the Selimiye in Edirne, the Süleymaniye in Damascus, the Sokollu Mehmed Pasha mosques in Istanbul and Edirne, and the Banya Bashi mosque in Sofia are all descendants of the Sinan tradition. In the Mamluk and Arab provinces, the new Ottoman mosques often used local stone and a more lavish use of marble and tile; in the Balkans, the classical Ottoman plan was adopted almost unchanged, since it was felt to mark the new Muslim communities as Ottoman.

Hagia Sophia, captured in 1453 and converted to a mosque with the addition of four minarets, a mihrab, and a minbar, remained the most important imperial mosque of the city. The Süleymaniye was conceived by Sinan as a deliberate rival to Hagia Sophia, and the Selimiye in Edirne as a deliberate improvement on both. The Selimiye dome of 31.28 m is in fact very slightly larger in diameter than the Hagia Sophia’s 31.24 m — Sinan, in the Tezkiretü’l-Bünyan, takes care to point this out.

Ottoman Baroque and the 18th century

By the early 18th century, the austere classicism of Sinan had begun to give way to a more ornamental phase. The Tulip Period (1718–1730), the brief era of peace and westernization under Sultan Ahmed III, brought European Baroque and Rococo motifs into Ottoman architecture, the same decorative taste that marked the miniature painting of Levni. The Nuruosmaniye Mosque (1755) in Istanbul, designed by Kayserili Mehmed Ağa and completed after his death by his student Mustafa Ağa, is the earliest large Ottoman mosque built in a recognizably European Baroque idiom.

The most spectacular works of the Ottoman Baroque are the imperial pavilions of the Bosphorus — the Beylerbeyi Palace (1865), the Çırağan Palace (1871), and the waterside kiosks of the Yıldız complex. These long, low, ornate palaces mixed Western Baroque and Rococo decoration with Ottoman carpentry, calligraphy, and carved-wood ornament.

The Balyan family and the 19th century

The Balyan family of Armenian architects dominated Ottoman court architecture in the 19th century. Krikor Balyan (d. 1858) designed the Dolmabahçe Palace (completed 1856) and several imperial mosques. His sons Nigoğayos Balyan and Simon Balyan continued the practice. Nigoğayos designed the Çırağan Palace (1871), which Krikor did not live to build; Simon worked on the Beylerbeyi Palace and other imperial commissions. The Balyans were responsible for the eclectic, European-influenced architecture of the late Ottoman court, and they trained a generation of Ottoman architects who carried the tradition forward into the early Republic.

Materials, ornament, craft

Ottoman architecture relied on a handful of well-established materials: cut limestone or ashlar for the principal mosques and palaces; brick for the supporting structures; marble for the columns, mihrab, minbar, and floor; lead for the domes and the minaret caps; and timber for the interior floors, doors, and ceilings. The great mosques of Istanbul were built in a pale stone from the quarries of the Bosphorus; the mosques of Edirne and Bursa used local red stone; the provincial mosques used whatever was available.

The ornament of the classical mosque was entirely non-figurative: Qur’anic inscriptions, the Ayat al-Kursi above all, marble dadoes, and windows filled with renkli cam — colored and stained glass assembled from small pieces set in plaster lattices. Outside the religious sphere, however, the Ottoman decorative tradition was rich in figural representation: the miniatures of the imperial albums, the painted ceilings of the imperial pavilions, the carved and gilded wooden ceilings of the harem apartments, the silk embroideries of the imperial wardrobe.

A note on the inheritance

The most concentrated collection of Ottoman monuments is in Istanbul, where the Süleymaniye, the Sultan Ahmed, the Fatih, the Beyazid, the Şehzade, the Yeni Valide, the Nuruosmaniye, the Ortaköy, the Dolmabahçe, and the Topkapı Palace all stand within the old walls, with hundreds of smaller mosques, hamams, türbes, and fountains. The classical idiom of Sinan remained a model for mosque architecture across the Islamic world into the 20th century, and the work of the Balyans shaped the architectural taste of 19th-century Egypt, the Balkans, and the early Turkish Republic. That the empire’s architectural inheritance is still standing, still in use, and still admired is, in my view, the single best argument against the old “decline” narrative.