After now having visited Sydney Harbour including the Opera House, I find it a pity that the nomination that finally got succesful in 2007 only covers the Sydney Opera House. Sydney's Harbour is its greatest asset, both as a magnet for immigrants in the past and for its picturesque setting. The Opera House is a single great building of course, but I was more impressed by the Harbour Bridge.
I "did" Sydney on a half-day bike tour. It took us all along the different quays, over various bridges but always with the fabulous harbour view in sight. The fish market was a worthy stop for a fresh snack.
We cycled around the Opera House too of course. From up close it is more visible that is actually made of 3 sets of "shells" (it looks like one structure from afar). After having read the reviews below, I had decided not to spend another 35 AUS dollar for a tour inside. The complex is very "open" anyway, it is a public building that is used by many.