The Hakone Open-Air Museum.

The Hakone Open-Air Museum is the first open-air art museum in Japan and was opened in 1969. It set in the gorgrous landscape of Hakone, and the outdoor view constantly changing with the seasons.
There are approximately 120 works by well-known mordern and contemporary sculptors, as well as 5 exhibition halls with Picasso's works, children play ground, and a footbath fed by natural hot springs, and other facilities where visitors are able to relax and enjoy the beautiful nature and art.
Apart from enjoying the art work and nature beauty, the museum also provides many installation art works, which visitors are able to enjoy the relaxation and entertainment. Saturdays are family day at the museum, therefore the adminssion is free for up to five children of elementary or middle school age per parent.
The Hakone Open-Air Museum has a collection of over 300 works by Picasso, and most are pottery works (which purchased from Picasso's eldes daughter, Maya Picasso). The museum also has varity of oil paintings, prints, sculptures, and gold and silver works, as well as large number of portraits by David Douglas who took over 17 years of the artist's life.
In the hall, there is tower by stained glass patterns and images. Visitors are also to walk up towards to the tower by stairs, with attractive and graceful sunshine through stained glass.
Museum hours: 9:00 ~ 17:00
Address: Ninotaira, Hakone-Town, Kanagawa Prefecture, 250-0493, Japan
Access: From JR Odawara Sation→Odakyu Hakone Yumoto Station→Hakone Tozan Line to Chokoku-no-Mori Station. It takes 2-minute walk from station to the museum.
When calling from outside Japan, replace the first 0 in the telephone number with 81.