This early 2000s-vintage snapshot shows the shopping precinct's City Walk entrance.
Photo from Wikipedia / "Bidgee"

In another early 2000s image, we see an interior view of a skylighted, Level 1 shopping concourse. 
Photo from http://www.canberracentre.com.au

A new extension of CANBERRA CENTRE first traded to the public in 2006 and 2007. Known as the North Quarter, it expanded the mall over a total of six city blocks. New tenants were added, such as a Big W discount store, new Supabarn supermarket and 9-screen Dendy Cinemas Canberra.
Photo from http://www.ndy.com / Norman, Disney & Young, Architects