For a hundred years this stretch of the Bosphorus shore belonged to the port and nobody else could walk on it. Galataport opened it up: the cruise terminal was buried underground and the surface became a promenade a kilometre and a half long.
There are shops and restaurants along it, and Istanbul Modern sits at the Tophane end in a building worth seeing on its own. But the reason to come is simpler — it is the only long, uninterrupted walk you can take directly beside the Bosphorus in the centre of the city.
Sunset is the hour. From Romance Istanbul Hotel take the tram to Tophane, or walk over Galata Bridge in around twenty-five minutes.