Haseki Hürrem Hammam in Fatih

You're standing at the Haseki Hürrem Sultan Hamamı, a sixteenth-century Turkish bathhouse right next to Hagia Sophia. First, notice how long this building is. Seventy-five metres, with its domes lined up neatly in a row. There's a reason for that. Inside are two bathhouses on a single axis: the men's to the north, the women's to the south. Placing them in one straight line was something new at the time.