When I read about this artwork, a sculpture of an island which is filled with helium in order for it to float, created by Sarah Cockings and Laurence Symonds- graduates of the Royal college of Art; I thought it was brilliant. When the piece, titled 'Is Land', was set free by two people cutting the ropes which I held it in place, I thought this made it all the more wonderful.
It is also handy that there was such a beautiful photo of the piece before it escaped, for the media to use.
NME article on Is Land
As far as I know, the piece still hasn't been found,