I went to Paris on business earlier this year and took my M6TTL with me. Never been before but I have a decent sense of direction and walked from Gare du Nord to the Louvre / Tuilleries. Nice place but it rained heavily virtually all day. I had to head for la Defense in the evening as our office is next to the big, square polo mint thingy. (Interesting but pretty ugly).
The light was miserable but I liked the place well enough to want to go back when the weather is a bit more "clement".