One of the best ways to see some of the beauty of Sydney is from the water. We spent about 90 minutes cruising the harbor aboard a Captain Cook Cruise. We left from Circular Quay, cruising around, and ending in Darling Harbour. There is seating both inside and out. There is also a top deck with seating that affords you a 360 degree view. This was a fantastic way to see the harbour. You pass very close to the opera house, and you actually travel under the bridge. There are plenty of great opportunities for photos. The cruise is very smooth. No one got sea sick. They provide you with one free drink, but the drinks are pretty limited. There is also an informational announcement that goes on through the speakers, but on the top deck you cannot hear a single word. I actually enjoyed the quieter cruise, but it seemed odd that they have speakers that you cannot hear. Overall, definitely worth the 90 minutes. It drops you in Darling Harbour which has great dinner options and Sydney Wildlife World.