It can be lit with programmable color RGB LEDs from inside, so the wind-channels actually glow in different and changing colors, as the cubes rotate around their vertical axis. At night, ground spotlights highlight the gleaming sculpture surfaces creating ever-moving light reflections.
An invisible internal vertical pole creates the vertical axis. Each cube is centered on high precision ball bearings, allowing it to turn easy. Due to the different orientation of the wind-channels, the cubes rotate in alternating directions. Due to the different size and weight (inertia) the cubes also rotate at different speeds.
Cube Tower was unveiled September 2012 at Changchun International Sculpture Park in China. It is only the second Kinetic Wind Sculpture in this, the largest Sculpture Park in the world, with over 600 large sculptures. The cubes rotate in alternating directions - see it in action here: