I haven't had the pleasure of traveling to Japan yet, but very soon I'll be going on a cool hunting adventure there-- and I don't know if I'll ever return! One place I must stop as I'm on tour around Japan is The Chichu Art Museum. It's only accessible by boat, and Tadao Ando designed it to be completely built into the ground and barely rise above ground level--so it doesn't disrupt the islands lush and natural appearance. Each section of the museum is connected by concrete corridors allowing natural light to flow in and cover some of the works inside. They apparently have an entire room dedicated to Monet's Water Lilies, but I'd go just to see the architecture and design executed on this beautiful island landscape.