http://www.slate.com/articles/business/moneybox/2015/08/katrina_and_other_disasters_they_almost_always_make_the_poor_poorer_and.html

Adolph Hitler visited Paris just once, in June 1940, in an entourage that included his architect, Albert Speer, and Arno Becker, the official state sculptor. He saw all the usual tourist spots, stopping to look around landmark buildings and monuments. He came just a week or so after the army of the Third Reich had occupied the city, a Paris that was by then all but empty of Parisians. But in the anxious weeks after the fall of the French army, most people hadn’t known whether they should leave or stay. Some had even wanted to believe the Germans would not come to Paris at all.