Yes. I know quit a bit about this city but always you can find some street (rue) where something interesting is happening or it is just great to walk on that street. Today after a hard day of work we visited Notre Dame de Paris and Sainte Chapelle in downtown. I've been several times over there but it is always nice and interesting. This time was also quit challenging and I really enjoy to share my knowledge with others who never have been there. It was the case with my colleague today. He visited several times Paris but never this chapel with all those huge "vitres".