Whenever you plan a visit to Paris, The Louvre is probably high on your list of things to see. That makes sense - it's arguably the most famous museum in the world. And while I also visited some of the exhibits in the museum, I was actually more keen on photographing the thing, because it's incredibly beautiful (inside and out).
So, my Louvre visit was a quick couple of hours one afternoon during the bright sunshine (and I grabbed some shots of the interior, which is fascinating), followed by a return later that day for golden hour and sunset. I was not disappointed.
I find it hard to focus on so much awesome art while visiting a museum, so bringing my camera helps me stay grounded by shooting away at all the incredible architecture. That way, I get my moneys worth - I see art and create art on the same visit. Win-win.