After Sinan the Great completed the Mihrimah Sultan Mosques, he started the renovation of Hagia Sophia. He was healing his confidant with great attention and care, as if he were bandaging his own wounds. He knew Hagia Sophia so well now that how long it could stand and last. He couldn't allow this. He should have made it possible to be an inspiration to many Sinans who would come after him. While he was covering the wounds of Hagia Sophia, the structure that would become his "masterpiece" began to appear in his head and heart. This idea was like a farewell letter to Sinan's first love, Hagia Sophia. There was no other dome in the world as high and wide as Hagia Sophia. For Christians, it was a source of pride for Turks and Muslims to still be unable to build a temple like Hagia Sophia. The great Sinan had solved this small issue. When Selim II, who came to the throne after Sultan Süleyman, wanted to build a mosque carrying his name, Mimar Sinan had the chance to reveal his last work that he kept alive inside of him. He was going to build the Selimiye Mosque in the old capital, Edirne. Whatever life has contributed to Sinan until now, he would embroider on it without hiding it. He carefully placed each stone as if it were a letter. He engraved Fatiha in his last work, Selimiye, just like the Surah Conquest, which he engraved in Sulaymaniye with abjad calculus. And Selimiye Mosque, whose dome is three metres higher and two and a half metres wider than the dome of Hagia Sophia, finished off the thousand-year-old Hagia Sophia uniqueness. After his "masterpiece", Sinan the Great was now Sinan the Grand…

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Although the information about Sinan the Grand's birthplace, year and ethnic origin is controversial, history once again showed us through Sinan the Grand that this is of no importance. During the reign of Sultan Suleyman, a water line was allowed to be installed in the mansion where he lived, as he solved the water problem of the city, but during the reign of Selim II, the water was cut off on the grounds that it was a privilege, so he left this world without a sip of water.