I visited Paris in 2007, and at that time I only had a vague notion of UNESCO. Therefore, when I wandered Paris it certainly was not UNESCO themed, but instead focused on some of the icons of France.
I spent considerable time at Notre Dame, the Eiffel Tower, and the Louvre. Luckily, I also unintentionally visited a few other sections of the inscribed area. I only have positive memories of my time in Paris, indeed many of the stereotypes I'd heard about France and Paris were far from my mind as I enjoyed this beautiful city.