My favorite activity here is just walking the streets. :-)
I overheard an American ask a guard for directions. The place he asked for was far enough away that the guard couldn't give him complete directions, just pointed in the general direction he should go. The man was pulling a suitcase, but the woman with him wasn't. I wondered where they were going with just one suitcase. No one travels that light these days. I asked him if he wanted to look at a map. I always have a map with me. But he responded "Oh we have a map. We're just too lazy to look at it." Then he added "It really doesn't matter. It's all good." I thought that was a good observation, but he was pulling a suitcase. If I were pulling a suitcase I would want to get rid of it and get out walking without it as soon as possible.
But it's true that here in Paris It's all good. I haven't found an area yet that I didn't feel comfortable in. Sometimes I choose not to go down a certain street because there is a lot of construction on it, which blocks the sidewalk, or because the architecture is mostly post war or between the wars-boring concrete. Those streets are rare, however and I find almost any street I choose has some hidden surprise or interesting shop to recommend it.
So, I have put together some photos of some of the streets I've walked the past few weeks
on this page--Streets of Paris.