is a working scale model of a hotel by architect enric ruiz of cloud 9 architecture. the hotel consists of a building with an ‘energy mesh’ wrapped around it. this ‘energy mesh’ has individual nodes that collect the sun’s energy during the day and at night gives off a specific color according to the amount of energy collected. the model’s mesh consists of 500 tri-color LEDs controlled by a PIC microprocessor. also imbedded in the model’s mesh are photosensors which determine the brightness on them and give off a color according to the energy color scheme.