Stuart Kendall (one of our clock engineers) just sent in the the link to this stunning piece of work…  The AION four story tall rolling ball clock installed in a Bucherer store in Lucerne Switzerland, and utilizing 150 crystal spheres. “The project was entrusted to Hanns-Martin Wagner from Switzerland and Mark Bischof from Netherlands. Work on the sculpture began in spring 2006 with a series of detailed feasibility studies, and the project was completed in 12 months.”  Some of the other stunning work by these guys can be see on their website.