Blind Blue Landscape is a work by Floridian artist Teresita Fernandez. It has been on Naoshima since the very first Setouchi Triennale back in 2010 (when it was still called Setouchi International Art Festival).
It is composed of several thousands little cubes of glass that have been glued along the wall. They all make a giant mirror reflecting the landscape behind in a very unique way, the reflection being somewhat hard to see, almost ghostly, but yet still there.
You can find it in the Benesse House hotel complex, more precisely in the corridor linking the souvenir shop to the the Benesse House Park building.
Not as famous as many other works on Naoshima, I personally find that it one of the most beautiful and poetic artworks on the island.
Access is free and (unless I’m making a mistake) open every day.
Please note that these pictures are a few years old, but it’s entirely possible that photographs are not allowed anymore, as it’s a trend with indoors art on Naoshima.