Wideman - you have it right

Paris is always wonderful, whatever time of year.
I second the recommendation for Chartres. The windows are brillant.
I would also recommend Sainte-Chapelle right near Notre Dame. The windows are incredible, especially of you can hit it on a summy day when you can just bask in the rainbow of colours streaming all around you. A truly relgious experience (even if you aren't)
I wish I were headed to Paris myself right now.
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I wish I were 1,000 miles away