L'As du Falafel has the best falafel in Paris and maybe the world -- and they know it. Their sandwiches come crammed full of crisp, fresh falafel, grilled eggplant, a massive pile of slaw and spicy sauce. I made a beeline for this place the first morning we arrived, got my falafel and headed staight for Places des Vosges for a noon-time sitdown amidst the trees, just me and my sandwich.