In the center of Paris, at the Metro station "Palais Royal - Musée du Louvre" or "Louvre - Rivoli".
Photo Spot Details
The Louvre is a very famous museum (home of La Joconde). Since 1989, a glass pyramid is in the middle of the building (designed by Pei). Highly debated when it was presented to the public, it is now a symbol of this museum. I think that at night is the best moment to capture it. A tripod is recommended, even if with high ISO it can be shot without since there are a lot of lights around.