This is one of those installations that I would love to encounter, while wandering in the desert for instance. Sun Boxes is a sound installation consisting of 20 speakers, independently operating. For those of you who have not seen it on the many other sites who showed this: each speaker has a built-in solar panel and contains a guitar sample.
The speakers are spread around so visitors can enter the installation to enjoy the ever changing composition from various sides. The installation, created by Craig Colorusso is completely solar powered and the music stops when the sun sets. A great way of showing we can create beautiful things only using natural resources.
Watch a (low quality) video of the Sun Boxes sound installation: