... Chicago, with a little bit of London, and some parts of Toronto, and a twist here and there of Brooklyn, and a small slice of Sacramento, and a dash of Spokane.
Screw it. Melbourne is like Melbourne.
And on that note, Sydney is like Sydney--it's not 'the San Francisco of the South Pacific' like so many Americans like to think. Sydney would have to be a lot filthier and get a lot more homeless to look like San Francisco--you just don't hear the San Francisco greeting 'Spare change?' in Sydney!
sydney to new york, and
melbourne to boston
Well, you're from back East, right? Me, as a native Californian, I don't see the connection at all... but that may be partially because I've only ever seen NYC and Boston in early winter or spring, never when the weather's been better...