It's not just the sight, but the sound.
A simple idea by Finnish artists Tommi Grönlund and Petteri Nisunen combines a tilting platform and thousands of metal ball bearings to create an amazing kinetic sculpture.
Click on the links and watch these videos full screen and high definition if you can:
Grönlund-Nisunen - Wave of Matter 2012, Vimeo>>
Grönlund-Nisunen - Flux of Matter - 2012, Vimeo>>
Via Hearing the Ocean in a Metallic Kinetic Sculpture, My ModernMet>>