Other contributors have said "How long did the Eiffel Tower take to build?" is the same question as "How long did it take to build the Eiffel Tower?" If you believe that these are not asking the same thing and should be answered differently, click here
The Eiffel Tower was built between 1887 and 1889. It took 2 years, 2 months and 5 days. The tower opened on 6 May 1889. The Eiffel tower ( that's how you spell it ) was built from 1887 through 1889. So it took 2 years to build
The Eiffel tower was desinged by Gustave Eiffel. It was built for the Exposition Universelle, or World's Fair, it took 3 year to build between 1887 and 1889. Hope it helps. xxx