|photo by SteveRSVR|
BBC news slideshow http://www.bbc.co.uk/news/uk-england-northamptonshire-14983682
Here's map of the laser 'field' to aid viewing:
View flow towers in a larger map
Illuminating water towers has a long history and was commonplace when water towers were novel and objects of civic pride. The Thorpe Hamlet water tower in Norwich was illuminated for a year to commemorate George V's silver jubilee in 1935. A couple of generations later, illumination of towers was used as way of reasserting their monumental quality and renewing civic pride as part of regeneration schemes. Cranhill Arts Project in Glasgow illuminated their local tower a vibrant green with white spotlights and nearby the Craigend water towers were illuminated as part of Glasgow's reign as the European City of Culture. The city council's lighting strategy webpage asserts: "Good lighting helps to increase vitality and improve ambience. It contributes to a sense of identity and place, makes for a safer, friendlier environment and also supports and complements other regeneration initiatives."