Oh, wow. Napa and Sonoma Valleys, every region of Italy, France's Loire Valley, Burgundy and Alsace, Germany's Mosel, Baden, Franken, Pfalz, Rheinhessen, Rheingau, Nahe and Württemberg; various parts of Maryland and Virginia...it's a long list.
Napa, Sonoma, Livermore, Woodinville, Rioja this summer..I mostly learn about global wines from great restaurants and wine bars in SF, Seattle, NY, Vegas, etc.