MUSEE DE LA GUERRE DE 1870 (GRAVELOTTE, FRANCE)
If you want to understand why World War 1 started and the French and Germans wanted war, this is the museum that will explain you about it : the 1870 Franco-Prussian war and the separation of Elzas/Lorraine from France to Germany.

Well explained the causes that started the war, day by day description of the battles, the surrender in Sedan, Paris besieged and the after match which created the revenge sentiment of the French … all these where the seeds that started WW1