They have a really interesting exhibit at the Art Ludique Museum in Paris that’s DC-Comics-themed. There’s a bunch of original art from various DC comics, not to mention costumes from pretty much all of the DC films from the last few decades.
Holy crap, the Louvre is impressive. I know — that’s kind of like saying “the Beatles are a pretty good band” or “hey, you know Citizen Kane? It’s worth watching!” Everyone knows this already.
I’m a tourist. I’m in Paris. So obviously I visited the Eiffel tower. I’m not a maniac.
Obviously if you’re in Naples, you’ve gotta go to Pompeii — it’s a quick, cheap train ride away from the city, and it’s an interesting enough piece of history to be common knowledge around the world. You’d be crazy to miss it.