My grandmother bought me a globe when I was 11, and I really got into it. I studied where all the different countries were, and later on when I was about 13 or so I bought a World Atlas. Now I could pinpoint the location of nearly all of the countries in the world on an unmarked globe, except for perhaps a few in Oceania and Africa. Europe, Asia, Latin America- I could find any there.
As for foreign languages, I started learning Spanish when I was 14 and I'm still not fluent but I'd say I'm definitely proficient now(I'm 18). I've also started to learn Italian in the last few months.
I think one of the primary reasons I have a more globalized take than most young Americans is that I spent a lot of time on the net. Being able to talk to anyone from anywhere around the world just made the outside world seem a lot more tangible to me then it would have had I not spent much time talking to people from other places.
So there are downsides to very frequent net use, but I guess theres an upside too. I bet that if you studied it the more social and outgoing the person is, the less they probably know about foreign countries, geography etc.