What monument did gustave Eiffel build?
The Eiffel Tower Sydney harbour bridge
I don't know who built it but I know that Alexandre Gustave Eiffel had the idea to construct the famous monument. Gustave Eiffel designed the Eiffel tower. It was build from 1887 to 1899 as a monumental entrance for the World Fair and to showcase possibilities of iron in construction. Gustave Eiffel also designed the internal frame for Liberty statue. The French Engineer Gustave Eiffel built the Eiffel Tower. by a man named Gustave Eiffel.