Question: who came up with the idea of the eiffel tower
Answer: The design of the Eiffel Tower was the product of Maurice Koechlin and Émile Nouguier , two senior engineers working for the Compagnie des Établissements Eiffel , after discussion about a suitable centrepiece for the proposed 1889 Exposition Universelle , a world 's fair to celebrate the centennial of the French Revolution .