Yeah, why did they go through all that effort to build the Eiffel tower?
I realize that was tongue in cheek, but what I found more interesting is that is was only to stand for 20 years and was initially set to be demolished in 1909. So your question is even more amusing as the thing was only supposed to be temporary.
Selfie geolocation
It honored the 100th anniversary of the French Revolution. And it demonstrated French industrial prowess, iron craftsmanship advanced engineering capabilities..