Re: Anything interesting in Perth, Western Australia?
Fremantle is a nice town, just at the end of the train line. You can easily spend a day touring the old prison.
Surfing in Cottesloe.
The museums and gallerys in Perth are free also.
Go to Margarets river vineyards for a day, if you have a car
Take the train to Guildford, decent restaurants and olde world charm, passes a few hours.