This is NOVA, a 3D LED display, developed by the Swiss Federal Institute of Technology Zurich to celebrate their 150th anniversary. Here are some numbers: it is build with 25000 lightballs, each containing 12 LED’s. It can display 16 million colors and 25 images per second. It measures 5 by 5 by 1 meter and it is 3.3 tons heavy. Impressive! So if you happen to go to Zurich, make sure you go and check it out in the train stations main hall, it will be there till September 2009.
There are some more photos in tom29ger his Flickr set.