Contrary to what is commonly believed, Melbourne has some of Australia's best doorways. Not always hidden, often in plain site.
This doorway is seen in the State Library of Victoria, and leads to a mage of great intellect, called "Information Desk". Today InfoDesk's body was inhabited by Sarah. She was very helpful.
Here we see a door to Melbourne's engine room ("loading rock"), and to it's fuel cells. Note the guardian, protecting just anyone from entering. It is a city job, but since she's not strictly a council job, she's not required to wear hiviz, although she is required to look like she's not doing anything.
This door is an entrance to the Unseen Art gallery and eating hall.