Selimiye Mosque in Edirne: Sinan's Architectural Masterpiece

The Selimiye Mosque in Edirne, in north-western Turkey, was built between 1568 and 1575 for Sultan Selim II by the Ottoman chief architect Mimar Sinan. Sinan himself called it his masterpiece. With a vast central dome resting on eight piers and four soaring minarets, it is widely regarded as the summit of classical Ottoman architecture and is now a UNESCO World Heritage Site.

Background: Edirne and Selim II

Edirne, known in Greek and Latin as Adrianople, was captured by the Ottomans in the 1360s and served as their capital until the conquest of Constantinople in 1453. Even afterwards the sultans kept a palace there and often spent long periods in the city, hunting in its surroundings.

Selim II, son of Suleiman the Magnificent, came to the throne in 1566. Imperial mosques were traditionally paid for with the spoils of war, and Istanbul already had the great foundations of Selim’s ancestors, including the Süleymaniye Mosque of his father. Selim chose instead to build his monument on a hill in Edirne, where it would dominate the city’s skyline.

A popular story holds that the mosque was paid for with booty from the Ottoman conquest of Cyprus in 1570–71. The campaign certainly coincided with the building work, but the details of the financing are not well documented and the claim should be treated with caution.

Sinan’s masterpiece

Mimar Sinan (c. 1490–1588) was a devshirme recruit who had served as a military engineer before becoming chief architect of the empire in 1538. Over half a century he and his office were responsible for hundreds of buildings, from mosques and bridges to bathhouses and caravanserais.

In his memoirs, dictated to the poet Sai Mustafa Çelebi, Sinan divided his career into stages. He called the Şehzade Mosque in Istanbul his apprentice work, the Süleymaniye his journeyman work and the Selimiye his masterwork. He also wrote that he had set out to surpass the dome of Hagia Sophia, which Christian architects had claimed could never be equalled.

Work began in 1568 or 1569, when Sinan was around 80 years old. The mosque was completed in 1574–75. Selim II died in Istanbul in December 1574 and was buried in the grounds of Hagia Sophia, so he never worshipped in his own mosque.

Architecture: the dome and the space

The Selimiye’s central dome has a diameter of about 31 metres and rises some 43 metres above the floor. It rests on eight massive piers arranged in an octagon, set within a square outer building. This arrangement allowed Sinan to dispense with the large half-domes used at Hagia Sophia and the Süleymaniye, creating a single, unified space that the eye can take in at once.

Four small semi-domes fill the corners of the square, and the side walls are pierced by rows of windows. More than 200 windows fill the interior with light. Galleries run around three sides, while the mihrab (prayer niche) sits in a shallow apse so that it is visible from almost every point in the hall.

At the centre, directly beneath the dome, stands a raised marble platform for the muezzins (müezzin mahfili), with a small fountain beneath it. Its placement emphasises the centrality of the plan. The carved marble minbar (pulpit) is considered one of the finest of the period.

Minarets and decoration

The four minarets stand at the corners of the prayer hall. Each is about 70 metres tall, or more than 80 metres including its conical lead cap, making them among the tallest minarets built in the Ottoman world. Each has three balconies, and in two of them three separate staircases spiral up independently, so that three muezzins could climb without meeting.

The interior is relatively restrained, but the sultan’s private gallery (hünkâr mahfili) and the mihrab wall are decorated with some of the finest Iznik tiles of the 16th century, with tulips, carnations and other flowers in bright blue, turquoise, green and the characteristic tomato red. Some tile panels were removed and lost in the late 19th century.

Visitors often look for an upside-down tulip carved on a column of the muezzins’ platform. Local legends link it to the owner of a tulip garden that once stood on the site, but its true origin is unknown.

Engineering and building methods

A dome of this size exerts enormous outward thrust. Sinan carried it on the eight piers and transferred the forces through arches and buttresses that are partly hidden inside the outer walls and partly expressed as turrets around the base of the dome. Thinner wall surfaces between the piers could then be opened up with windows.

The building was raised in cut stone, with brick used in parts of the vaults, and the dome and minaret caps were covered in lead. Labour came from a mix of paid craftsmen, soldiers and conscripted workers, organised by Sinan’s imperial office, which also supervised the supply of marble, timber and lead from across the empire.

The social complex

Like other imperial mosques, the Selimiye was the heart of a külliye, or charitable complex. Sinan’s plan included a madrasa (college) and a school for the study of hadith, the sayings of the Prophet Muhammad, set at the corners of the outer courtyard. Their income came from endowed properties.

Under Selim’s son Murad III, the architect Davud Agha, a pupil of Sinan, added a long covered market (arasta) on the west side, whose rents helped pay for the mosque’s upkeep. The madrasa buildings now house museums, including the Turkish and Islamic Arts Museum.

Myths and facts

Myth: the Selimiye has the largest dome ever built. Sinan aimed to outdo Hagia Sophia, and by some measurements his dome is slightly wider, but the difference is small and Hagia Sophia’s dome stands higher. Larger domes existed elsewhere, such as the Pantheon in Rome, built in the 2nd century AD.

Myth: Selim II personally supervised the building. Selim visited Edirne often, but the project was managed by Sinan and his architects, and the sultan died before the mosque opened.

By the numbers

Legacy

The Selimiye represents the high point of the classical Ottoman style. Later imperial mosques, such as the Sultan Ahmed (Blue) Mosque in Istanbul, returned to plans with large half-domes and never quite matched its clarity.

The mosque survived several dangers, including the Russian occupation of Edirne in 1829 and the siege of the city by Bulgarian forces during the First Balkan War in 1912–13, when it was struck by artillery fire. In 2011 UNESCO inscribed the Selimiye Mosque and its Social Complex on the World Heritage List.

Timeline

• 1360s: The Ottomans capture Adrianople (Edirne).
• 1566: Selim II becomes sultan.
• 1568–69: Construction of the Selimiye Mosque begins.
• 1574, December: Selim II dies in Istanbul before the mosque is complete.
• 1575: The mosque is completed and opened for worship.
• Late 1570s–1580s: Davud Agha builds the arasta market under Murad III.
• 2011: UNESCO inscribes the Selimiye Mosque and its Social Complex as a World Heritage Site.

Why it matters

The Selimiye Mosque shows an architect at the end of a long career solving the central problem of Ottoman mosque design: how to cover a vast, open prayer hall with a single dome. Its unified interior, bold minarets and fine tilework made it a symbol of Ottoman achievement, and it remains the defining landmark of Edirne.