The Hakone Open-Air Museum is Japan's first open-air museum, opened in 1969 in Hakone, Ashigarashimo District, Kanagawa Prefecture. It holds collections of artworks by Picasso, Henry Moore, Taro Okamoto, Yasuo Mizui, Churyo Sato, Susumu Shingū, and many others, featuring over a thousand sculptures and works of art.