I posted earlier this year the details of the Hotel Habitat building developed by Cloud9. I've just come accross some lovely more images so I thought I'd stick a few up. Further images .

“The Habitat Hotel will be developed in the Barcelona area. It is a hotel with a light mesh that wraps the whole building. The light mesh has sensors that will read the daylight sun amplitude and then at night each node will give off color according to how much that node collected sun.”