After finishing our Rocks walk, we had hoped to do another walk I had cards for, which would take us through the Royal Botanic Gardens and around the Opera House, but it was raining pretty steadily at that point, so we decided instead to use our all-day transit passes some more, and took the ferry from Circular Quay (pronounced "key" here – those wacky Australians!) to Darling Harbour to see about going to the Aquarium.
More views from the ferry:
Here are some photos from Darling Harbour itself, taken after we toured the aquarium and were waiting for the ferry back.
Where have the days gone? 
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