The Ehime Prefectural Science Museum is situated on the hillside overlooking Niihama and the Inland sea.
It opened in 1994 and was designed by Kisho Kurokawa, an internationally-renowned Japanese architect who I am not very familiar with, but I have seen his Mojiko Retro Tower.
The complex of buildings uses geometric shapes... cone, triangle, cube, sphere, semi-circles etc as well as a large reflective pool.
Embodied in the concrete is titanium, granite, and marble.
The museum is open from 9 to 5 daily, except Mondays. Entrance is 500yen