The Sultan's Six Minarets

In 1609, Sultan Ahmed I stood at a low point. The Peace of Zsitvatorok had just delivered a blow to Ottoman prestige, and unlike his predecessors, he had no major military victory to his name. Tradition held that an imperial mosque should be funded by the spoils of conquest — a mark of a sultan's glory. Ahmed had none. Yet he decided to build one anyway, hoping the act itself might win him God's favour and restore the empire's standing.

He chose an extraordinary site: the southeast edge of the old Byzantine Hippodrome, directly facing the Hagia Sophia, which by then had long served as a mosque. The location had once held the Hippodrome's bleachers and imperial box — remnants of which were later unearthed during 20th-century excavations in the mosque's courtyard. Building there meant demolishing the palaces of prominent viziers, including Sokollu Mehmet Pasha, an expensive and disruptive undertaking.

The cost, combined with the empire's economic strain, provoked fierce protest from the ulema, the Islamic legal scholars, who argued that a sultan without conquests had no right to drain the treasury for such a project. Some went so far as to forbid Muslims from praying there. Ahmed pressed on regardless. Construction began in 1609 under the architect Sedefkar Mehmed Agha, a former student of the great Sinan, and continued until an opening ceremony in 1617 — though some inscriptions bear the date 1616. Ahmed died around that same time, and the final accounting records were signed not by him but by his successor, Mustafa I, suggesting the sultan never saw his project truly finished.

What rose from that contested ground was, in scale, a direct answer to Hagia Sophia. The prayer hall spans 64 by 72 metres, crowned by a central dome 23.5 metres across and, according to Turkish sources, 43 metres high, ringed by four semi-domes and smaller corner domes. Six minarets flank the structure — making it, at the time, the first mosque in Turkey to bear six. Mehmed Agha drew on his master Sinan's Şehzade Mosque for its plan, but architectural historians note his own instinct was more sculptural, more attentive to ornament and detail than Sinan's austere geometry.

Inside, the mosque earned its popular Western name from an overwhelming programme of decoration: more than 20,000 Iznik tiles, produced under the tile masters Kasap Hacı and Barış Efendi of Cappadocia, covering the walls in blue, green and white floral patterns drawn from over fifty tulip designs. Lower registers carry traditional motifs; upper galleries burst with flowers, fruit, and cypress trees. Some tiles were even repurposed from Topkapı Palace's harem after a fire there in 1574. Over 200 stained-glass windows, a gift from a Venetian signior, once filtered coloured light through the space, supplemented today by chandeliers. Calligraphy from the Quran, largely the work of Seyyid Kasım Gubari of Diyarbakır, threads through the interior.