Several hundred years ago when the forces of Islam wanted to capture Vienna, they came with the sword and the cannon and laid siege to the city walls. Today they simply take a plane. While Vienna was able to resist repeated sieges, it was not able to resist Islamic immigration, and as a result the city looks a good deal more the way it would have had it fallen to an actual siege. Today as much as a third of Vienna is of foreign origin. And as many as 50 percent of Viennese schoolchildren have a non-German language as their mother tongue.