We headed to the wharf, also known as Circular Quay (pronounced "key"). The best sights are on display there, like...
This bridge was completed in 1932 at the height of the Great Depression (yes, Australia had it, too). It is nicknamed the "coat hanger" because of its single arch. It was quite an engineering feat in its day. It's never totally finished though: they've been painting it basically since it was completed. Once they finish one coat, it needs another one!
It was built from both ends. The foundations were built first, then the arch, then the road. You can climb the arch all the way to the top and back down the other side, but we opted to admire it from afar.