Sometimes, like people, a place can reveal its inner character when you catch it when it is alone.
Sydney Harbour is one of the most popular places for tourists. During the day, it is packed with people and pigeons. Aside from the Ferry Terminal it also has attractions surrounding it like the Opera House, museums, as well as hotels and restaurants. It can be quite busy indeed.
Until you let all of them go and see a different side. It is a dock, a port, after all. At night when the tourist are gone it goes back to its nature, quite lonely I suppose.