Not many things say play time like giant bubbles - even if they do come in the form of balloons. 'Soap Opera' by German collective Raumlabor-Berlin is an installation celebrating the 2010 opening of 'Ruhr European Capital of Culture'. Made from transparent latex, each balloon is filled with either helium or air to create a sense of floating and movement. Each balloon is then lit from within to give an ethereal quality - passerbys can watch them float between the old bath house on the site and the grove of birch trees.