Somewhere in Scandinavia could be nice (assuming I naturally turn out to be a fluent Norwegian/whatever speaker). I'd like really remote bits, but they still have the high standard of living.
Yep, I'm decided; Norway. In a massive fortress mansion built into the side of a fjord, with its own submarine harbour and in-mountain indoor runway for small planes. Ofc, I'd get it all sorted so that sea wouldn't erode my place, and I'd have a flat in Oslo if that fell through, or just for normal living.
edit: Canada might have a similar sort of thing going on...