Galata Tower is a 62-metre cylinder of pale stone on the hill across the Golden Horn, and the narrow balcony under its cone is the classic viewing point over the city. You ride up, step out, and Istanbul arranges itself below: the domes and minarets of the old peninsula, the Golden Horn threaded with ferries, the Bosphorus opening toward the sea. Genoese merchants raised the tower in 1348 as the crown of their walled colony, and it later worked for the Ottomans as a fire lookout, a prison and an observatory.
The conical cap has been lost and rebuilt more than once, so what you see is a medieval core in a much-repaired skin. At the foot of the hill the lanes still tangle downhill toward the water, full of music shops, cafés and buskers. Legend has one Ottoman scholar gliding from this balcony on homemade wings. The tower is a museum now, the top gets crowded, and a slow queue winds beneath it for much of the day.