Monument Fethiye Mosque in Municipality of Athens

You're standing at the Fethiye Mosque, on the northern edge of the ancient Roman Agora, right in the middle of Athens. Start by looking at the roof. There's no minaret, but there's a whole family of domes. A big one sits in the middle, with half-domes on either side and smaller domes on the corners. The porch has five arches, and each one has its own little dome on top. Now turn your head a bit. That's the Tower of the Winds, just nearby. Roman, Byzantine and Ottoman Athens are practically neighbours here.