Seeing as you're a big architecture fan, you'll love these Melbourne buildings:
RMIT Building 8
"One of the most outstanding Post-Modern works in Melbourne today, Building 8 set the tone for a number of projects which changed the way people saw Melbourne city.
The aim was to delight and break down the dominant and seamless city-wall mood RMIT presented on Swanston Street. The buildings front, side and rear elevations create a whole from fragments and a collage of design ideas. It presents itself to the city on its own terms.
The building engages the idea of uniting opposites. It demurs to Melbournes built past: memories of Walter Burley Griffin, the Manchester Unity, the Block Arcade, the Shrine et alia are fleetingly seen in its aesthetic.
It was described by a national architectural commentator as a building that "thinks it's a city". The building is widely recognised nationally as being distinctively Melbourne in character and idea. This strong sense of regional identity and pride is no small achievement in this international era."
http://www.walkingmelbourne.com/building366.html
Federation Square
http://www.federationsquare.com.au/index.cfm?pageID=56