Sinan's masterpiece crowns the Third Hill like a stone crown, and the moment you enter the courtyard you understand why it took seven years to build. The interior achieves something rare — monumental scale that somehow feels intimate. Light pours through stained-glass windows by the artist Ibrahim the Drunkard, the acoustics are astonishing, and the garden behind holds the modest tombs of Süleyman and Roxelana, side by side after four and a half centuries.