Blur Building .Described as "an inhabitable cloud whirling above a lake,". It was constructed for the Swiss Expo 2002 at the base of Lake Neuchatel in Yverdon-les-Bains, Switzerland. The massive construction was constantly shrouded in a body of thick mist, produced by 31′500 seperate high-pressure water jets which propelled lake water droplets so small that they remained suspended for an extremely long time. The structure was controlled by a computer allowing the cloud’s size to be controlled at the touch of a button.link