There are a few old stories around the place (Nagano - Shigakogen) like interactive Samurai battle below:

Below is what we had floating around the office...big boys still need toys^-^ !!!

Also if your firends have watched 'Spirited Away' - some places might be recognizable^-^

Many different spots are not advertised, like Soba noodle making and Kyudo-archery show, culture center... 

should get more on net but takes time^-^