Well, what can I say vorropohaiah? Welcome!
I wish you good luck with your worldbuilding project and a little more understanding from your girlfriend.^^
On a sidenote: I've got to save some cash and get myself Atlas Maior too... Since I love cities so much I invested in the Braun's and Hogenberg's Cities of the World first (love that book!). But like I said, going through Atlas Maior in a bookshop was a pleasure, though it's not the same as owning the actual thing, is it?^^