Wow, thanks for your wonderful post about your first day in Paris. This city really is a place where you can go as many times as you want and it never gets boring. When we are in Paris, we mostly just walk a whole day through the streets of Paris, as the city center is quite small and there is soo much to see, just a lovely city. Next time, we go to Paris at the end of September, already looking forward! Enjoy your days and happy travels!