It is devoted to the Napoleon's victories (like Arc de Triomphe which is more famous) which are written on the column.
The pedestal was added by the nephew Napoleon III who chose to put a sphinx (a la mode on this time).
The 4 women at the basis of the column are : the Faith, Viligence, Law and Force.
Tell me if you have guessed...It is located at the best place of Paris (the more central) and nobody really sees it.

