We're silly about the work of Japanese architect Junya Ishigami, who was in Auckland last week speaking at the NZ Institute of Architects' conference. During his talk, Ishigami showed images of his creation 'Balloon', an aluminium structure that weighed one tonne but floated ethereally in a Tokyo gallery space because it was filled with helium. It looked miraculous, and prompted an eruption of spontaneous applause. We found this YouTube video of it to show you: