The setting sun in Paris does incredible, magnificent things with the light:
The dome of the Sorbonne. See the little half-moon up there near the cross?
The Church of Saint-Germain l'Auxerrois, just behind the Louvre. The setting sun really brings out the color in the stonework.
My favorite view in Paris: Ile de la Cité and the Pont Neuf. Lots of people picnicking there on the tip of the island; that's what Parisians do on a summer's eve.
The sunset on my birthday last month: glorious!