View from Scrabo Tower, Newtownards. The lines are created by laser beams and extend for miles over the surrounding area. They are real... not photoshopped! It was a brilliant sight!
Brief info about it, "The art installation, called Global Rainbow, was created by American artist, Yvette Mattern, and will be visible for miles from dusk until midnight. It's part of the Cultural Olympiad, the event signals 100 days to go to the opening of the London 2012 Festival."