Atik Valide crowns a hill above Üsküdar as one of Mimar Sinan's largest and most complete works — a whole small town of stone raised when the architect was in his eighties. Nurbanu Sultan commissioned it: wife of one sultan, mother of the next, and the first of the powerful queen mothers who steered the Ottoman court from behind the harem screen. Around the mosque Sinan set a madrasa, a soup kitchen, a caravanserai, a Quran school and a hospital that later became the city's asylum. "Atik" means old — the name it earned once a newer valide mosque rose down by the shore.
You climb to a wide colonnaded courtyard, its domes carried on slim columns around a fountain and a few old cypresses — one of the calmest squares in the district. Inside, the prayer hall opens under a broad dome, and the wall around the mihrab carries some of the finest İznik tile in the city: tomato red, cobalt and turquoise in panels of carnations and tulips. It is a working mosque and a quiet neighbourhood landmark both, drawing far fewer visitors than its size deserves.