The whole point of travelling is, of course, street food. In Paris, they make yummy yummy crepes that you can have filled with anything. This one is being filled with nutella, a chocolate hazlenut spread. Options that I saw included bananas and brown sugar, but I know there were more. They're warm and excellent.
When travelling, I do recommend trying at least some street food. You get a chance to try something you're not likely to find in a restaurant, but that people in the city you're in are going to be very familiar with. Plus, it's fun!