Melbourne is well known globally in the graffiti world for its vast amount of street art. I visited two places during my stay, a smaller tucked away place called Croft Alley where for the most part I was the only person there. My other stop was a main stream place called Hosier Street, this place was extremely crowded and I spent more time being asked to take peoples picture than I did admiring the art.
I would say Hosier Lane had a lot more detailed art like the tiger, Snoop Dogg & Tupac Shakur but I will be honest I was shocked by how dirty and smelly it was. I think that's due to the amount of homeless & drug users that flood the lane although I didn't see any during my visit.
If you're ever in Melbourne I would definitely give them both a visit as they're not too far apart and in the City centre. Even if you're not really into graffiti I'm confident you would still appreciate the art.