Perhaps the most recognizable structure in the world is the Eiffel Tower located Paris, France. It was specifically constructed as the entrance gate into the World Fair that took place in the city in 1889. This fair was hosted to celebrate the centenary celebration of the French Revolution. Looking at the massive iron structure, people always want to know how long did it take to build the Eiffel Tower. It took 2 years, 2 months and 5 days to build the tower, a feat that is truly remarkable considering that the builders did not have access to modern gadgets and tools that are present today. The tower is named after the builder and architect, who designed it.