The moat at the Louvre

The greatest attraction at the Louvre is da Vinci's "Mona Lisa" but there are so many things to do at this place, so much more than a museum. 

Deep under the Louvre the well-preserved moat is open to exploration. The Louvre was once a fortress, and the moat is a reminder. Militarism and culture. This theme reverberates all over Paris whether you regard the Housmann urban plan, the Pere Lachaise cemetery, or the bronze-age statuettes and spearheads at the Louvre. Certainly the moat itself tells that story. 

As a deeply historical city there is so much history in Paris that is buried or untold. An ancient settlement that pre-dated the Romans, the city has built and rebuilt itself, sometimes with little regard to the past, sometimes with a deliberate strategy to suffocate history.