Certain subjects look great when processed via HDR tone mapping programs such as Photomatix. It really looks gorgeous with lots of textures – such a concrete and fabrics.
Think about what you would find interesting to photograph. Maybe you want to find an industrial subject with lost of dirty concrete, like a concrete underpass under a highway.
Remember, you don’t have to use tone mapping
PHOTO: Flickr link: http://www.flickr.com/photos/7138465@N05/5354795277
(Remember that the brief states you need to include a view through to the outside – Inside Out!).
POINT NEPEAN NATIONAL PARK
There are beautiful concrete bunkers and tunnels at Point Nepean National Park:
And there are awesome bunkers at POINT LONSDALE
Historic houses look great!
VISIT VICTORIA HAS A LIST OF HERITAGE BUILDINGS
And check the National Trust website: http://www.nationaltrust.org.au/vic/heritage-places
If you want to photograph inside a house museum, you may want to call ahead to ask if it is ok to take photographs using a tripod. Some venues will charge a photography permit fee. It may help if you explain that the photos are for educational purposes, not commercial photogrpahy.