A River Cat is a passenger ferry that chugs to and from the Harbour, providing many people with a practical alternative to driving in and out of the City.

I boarded at Parramatta, and for much of the journey the scenery wasn't anything special, nor is it meant to be be. However, the approach to the Harbour itself does provide some nice photo opportunities.

There is the Opera House, of course.

This is one I got from a slightly different angle, which shows the roof contours more prominently:

And here's another tweak of the same image:

There is also the Sydney Harbour Bridge. The important thing to realise, as you get closer, is that the tiny ants crawling over it are people climbing the Bridge.