Thanks to stage architect/designer Mark Fisher, Pink Floyd's tours became a staple in the industry because of their outstanding special and scenic effects. Pyrotechnics (such as exploding flashpots, an exploding gong and fireworks) and dry ice were used extensively throughout Pink Floyd's career. In 1973's tour to promote "The Dark Side of the Moon", a large scale model plane flew over the audience and crashed onto the stage with a spectacular explosion, an effect repeated at the start of "The Wall" and the "Division Bell" shows. During shows to promote "A Momentary Lapse of Reason", a similar effect was achieved with a flying bed.