When was the eifiel tower built and why?

The Eiffel Tower was constructed between 1887 and 1889 as the centerpiece for the 1889 Exposition Universelle (World's Fair) held in Paris to celebrate the 100th anniversary of the French Revolution. Designed by engineer Gustave Eiffel and his company, it was intended to demonstrate France's industrial prowess and innovative engineering. Initially met with criticism, it has since become a global icon of France and a symbol of architectural achievement.