Humming Home-Sick-Ness

Which town or county or country or continent -- which place really -- do you miss when you're feeling homesick, all over, when you're away and feeling it truly and staring, longingly, into the void? Perhaps humming. Is it the place of your birth? Or where you settled after school to raise a family, win bread, or pursue another more complicating dream? Or your childhood friends and haunts? Or just where ever your mama be?