Bayu U.
Google
After you come off of the bus from Nagano Station, cross the road immediately and climb the stairs, that's the museum location. It's absolutely a bargain, the ticket price compared to the experience that we had together as a family with young children. The highlights were definitely the ninja house, where you have to solve your way out, and also the ¥200 for 7 times throwing shuriken. You will even get a notepad for stamps if you hit it 5 times. The obstacles such as balancing beams and ropes were also fun and exhausting at the same time. Definitely a must if you have teenagers and children in your group. I recommend skipping the artifacts, the building was smelly.