Natalye R.
Yelp
This huge and beautiful 19th-century building houses the grand gallery of evolution, which is home to more than 7,000 preserved species. It's four floors and has a ton to look at. Everything is in French, so I couldn't read a thing, but that still didn't stop me from marveling at everything (including the changing lights and sounds). I probably spent an hour going through here on my own, but I imagine if my child were with me, it would've been longer (and I hope to return to Paris with him one day and bring him here).