Parisian landmark built for the centennial exposition of 1889. Conceived by the bridge engineer Gustave eiffel l,the 984-ft tower of open lattice wrought iron was a technological masterpiece. Making use of advance knowledge of the behavior of metal Arch and truss forms under loading l, the structure presaged a revolution in civil engineering and architectural design. The tower was the world's tallest building until the Chrysler building in New York City was topped off in 1929 .
