[dbetteridge]

Another option is

Western Australia: 0.2 if you get outside the capital city.

You'll see stars you didn't know existed and the distances are something else.

Northwest territories is beautiful though.

[VagabundoP]

I stayed out past Margaret River in Western Oz and "OMG its full of stars" when I went to the outside toilet during the middle of the night and looked up.

I felt like I could get sucked up and lost in galaxies. You could see so many.

[dbetteridge]

I live down in the south West and you really don't have to go far for some fantastic star photography.

Blackwood River forest is just one example.

[sandworm101]

Autralia is empty too, but lacks the vertical dimension. Seeing big mountains far away gives one the sense of being in a bigger "room".

[bookofjoe]

Altitude is also an excellent force multiplier for visualizing stars. I can still see in my mind's eye the sky at night at 17,000 feet while trekking in Nepal in 1982: it looked like glitter-studded fabric, the stars almost contiguous.