Hakone is close to Mount Fuji and about 100 km away from Tokyo. Hakone is perhaps most famous for the hot springs but also offers great views of Mount Fuji and outdoor activities such as camping and hiking.
One of my favorite places in Hakone is the Open Air Museum, where the above photo was taken. This outdoor museum displays lots of modern, abstract and interesting artwork in the surrounding grounds with mountains, vallies and the ocean as the backdrops. I highly reccomend checking this place out if you make it to Hakone.
For more information please see the Japan-Guide.com.