Tourist info on Nagano can be found here
Funnily enough, I was in Nagano yesterday (my sons school trip). The bonus for me was driving past the Nissan Skyline Musuem (Nagano branch) - I knew it was in Nagano, but no idea where. I shall be returning to check it out sometime in the next week, will post pics if there's anything interesting.
BTW - if you're interested in living in Nagano, there is a beautiful city set in a huge circular valley, with a massive lake in the centre. Flanked on all sides by mountain ranges, you couldn't ask for a more picturesque place to live...
only problem is the name: Suwa City
(pronounced Sewer! ...."Hey mom, I'm living in Suwa city!" :D )