Andrew, my distant Scettrini rellie from Melbourne, directed people to this blog to look at some of the interesting draincovers we have in Palmy, so I thought I had better add another one.... This is an example of the 'artistic' series that I love finding: the giant umbrella sedge.
But these interesting ones are the exception: most are more utilitarian, like the three below. Firstly comes the fire hydrant cover.
And I have to show my ignorance here. I think the round one is stormwater. And I think the S on the other one might indicate something about the sewer..... but I might be quite wrong!
I am not sure how many more 'artistic' variants there are to be found. I will have to keep my eyes open when I am out cycling!
Addendum: Ahha- another one of the 'pretty' ones found when I cycled to the Esplanade for the 'Open Day'.