Hakone Museum under the open sky was opened in 1969 and was the first museum in Japan, literally not have a roof over the heads of visitors. Setting for the exhibits - sculptures and installations - is nature itself, namely forest, located high in the mountains. Depending on the time of year, visitors to the exhibition hall will surround each time different landscapes.

As stated on the website of the museum, he's trying to recreate a harmonious balance of nature and art .  Its territory that is more than 70 thousand square meters .  meters, installed more than 120 sculptures, written by the masters from around the world - such as Rodin, Pablo Picasso, Henry Moore and others, as well as several Japanese artists .  In addition to the exhibition hall in the open air, the museum also has five private pavilions, including a pavilion dedicated to the work of Pablo Picasso .  For children in the museum a children's playground, and it is there that the authors placed the installation of the Japanese - an unusual shape, bright, functional, made using materials that are not classical sculpture - a multi-colored grid, for example .  For weary travelers near the museum opened shops, cafes and restaurants, and even a SPA-service in the form of hot baths for the tired legs travel .  However, it gives tourists a comfortable mountain train .

It seems that the motto of the museum was the phrase, said Henry Moore that the sculpture is an art - in the open air. The museum has 26 works of this English sculptor.

The collection of Pablo Picasso, consisting of more than 300 works, the museum bought his daughter Maya Picasso. It includes paintings, sculptures, ceramics, prints, coins and many portraits of the maestro, which were created in the last seventeen years of his life and that are important for the understanding of his life and work.