Some people tell us to listen to nature. But one artist took it a bit further. At the Exploratorium in San Francisco, Artist in Residence Peter Richards has created the Wave Organ - a series of 25 PVC and concrete "organ pipes" that extend into various levels of San Francisco Bay. There the lapping waves and moving water generate sounds that vary depending on the weather and the tide.

Users listen a the end of the pipes to the sounds generated by the water's movement. The entire installation is built upon a jetty comprised of stones salvaged from the destruction of a nearby cemetery.

NOT was disappointed that the organ didn't play Bach's Toccata and Fugue in D minor.