Gustave Eiffel was a French civil engineer best known for designing the Eiffel Tower and contributing to the Statue of Liberty. He graduated from L'École Centrale Paris and designed hundreds of metal structures including bridges, viaducts, and observatories. The Eiffel Tower, built for the 1889 World's Fair in Paris, was the tallest structure in the world until 1930 and took over 2 years and thousands of workers to construct out of iron. Eiffel also helped design the internal metal framework for the Statue of Liberty, a gift from France to the US that was dedicated in 1886 to commemorate the American Revolution.