Have one day to experience the city. No sightseeing this day!

Season?

Walk around Notre Dame and sit in a cafe. Take Metro to Montmartre and walk around and sit in a cafe. Take bus to X, walk around, sit in a cafe. Take bus to X, walk around, sit in a cafe.

No sightseeing? Keep eyes closed.

Not sure what you are looking for? Need more info.

Are you arriving at an airport, by train, etc. or will you be there for night before or after? Are you coming off an international flight or have another flight to catch?

Trying to determine exactly how much time in hours you will actually have for sightseeing, excluding any bits of travel time, jet lag, etc. Is one day really 5 or 6 hours, 8 hours, 12 hours, 24 hours?

Gretchen says it all.

I think there should be a book (I'm laying claim to the title!) "Plopping in Paris."

I often remember when our youngest at around age 8 or 9 got some sort of flu mid-trip during a winter stay in Paris. We went to a local cafe that we had frequented, told the proprietor that she was under the weather, got her a window seat, and plied her with hot liquids for four hours as the rest of us alternated babysitting turns while we went out to "sight-see".

She told us later that this one day out of all of her early trips to Paris is the one she remembered most. She totally got it that no one was trying to "turn" her table; that the world passing by in Paris is everything. She is the one who spent her year abroad in Paris--and who would do anything to live and work there again.

Good post, Gretchen!
AZ

Thanks Gretchen! Been seeking other sources and you are right on!

Go to Rue du Montparnasse (crosses Boulevard du Montparnasse) to eat crêpes.