If you haven't been to Paris, I have the next best thing for you: Paris 26 Gigapixels.
According to the site, "Paris 26 Gigapixels is a stitching of 2,346 single photos showing a very high-resolution panoramic view of the French capital." The site allows users to pan around the beautiful city of Paris to see important spots. Users can also zoom in on different sections to get more detail on particular buildings.
For those folks who want to find important Paris monuments quickly, the site also boasts a list of 20 places around the city. Upon clicking on one of those locations, the site automatically changes the view to the spot. Those 20 locations also feature an "i" indicator, which, when clicked on, gives some basic information about the respective monument.
Paris 26 Gigapixels is simply awe-inspiring. It's one of the most beautiful sites I've ever been on and it delivers an interesting and educational experience. Simply put, it's a must-see.