Lego Secret Vault

Check out this website - gizmodo.com, it has a big section of it dedicated to their recent trip to the Lego factory - I am supposing it's in Denmark, since I didn't see a location listed in the article. At this factory, they store one of each and every set that Lego has ever produced - 4,720 of them - from the fifties to today. Check out the article here, which features a nifty video of some of the sets and lots of pictures.