Seiwa-Kogen Lodge and Observatory

Seiwa-Kogen sits at an altitude of 700m and it is one of the best places in Japan to observe the beautiful starry sky.
The observatory has a Newtonian reflecting telescope which ie 50cm in diameter, which can be used for star watching.
In addition, there are detached lodges, attached restaurants, and you can enjoy dinner and staying overnight and observing the stars.