The style is characterised by the use of analogy and metaphor as the primary inspiration and directive for design. Well known examples of this can be found in the Palm Mosque at the King Saud University in Riyadh by Basil Al Bayati, based upon the form of a palm tree,[3] the Lotus Temple in New Delhi, by Fariborz Sahba, based on a lotus flower,[4] the TWA Flight Center building in New York City, by Eero Saarinen, inspired by the form of a bird's wing,[5] or the Sydney Opera House, in Australia, by Jørn Utzon that is derived from the sails of ships in the harbour.[6]