How Geelong Works was a temporary event to help people learn ore about what makes Geelong work.
According to the Facebook event page:
Take the family on an adventure to discover How Geelong Works. Collect an exclusive James Gulliver Hancock map and clues to uncover some surprising details about the design of Geelong. Find key sites around the city centre and collect features to add to your map.
I only found 3 of the key sites.