These resources are from a lesson I did on large English speaking cities (specifically, London, Manchester, Sydney, LA, New York).
Firstly, a powerpoint with maps and basic facts: Big City PWP.pptx
Secondly, this document contains descriptions of the above cities and was used for a reading comprehension activity: City Information
Finally, here are the videos I used to introduce the cities: Video Links
For a lesson on Australia click here.