This is a pretty cool museum. It's right next to the Matisse museum. It's included in the Nice…read moreMuseum ticket, so if you plan to go here and to the Matisse museum, going to one other museum on their list, which includes most local museums except the Chagall museum, makes it worth your while to pay the €15 for the museum pass.
This is a pretty cool site. The main attraction is the "backyard" area where you can see the ruins of an ancient Roman bath under excavation. Inside, they have a pretty good collection of Roman antiquities, and then there's a rotating special exhibit downstairs.
The only reason I'm not giving this site five stars is that the service, while adequate, could have been better. We didn't get much of a greeting when we arrived, but that was fine. The bigger issue was that they had an employee who was very upset about the totally normal way my wife was carrying her water bottle in the gift shop area who decided to address that by barking at her more than talking. It was a fully sealed water bottle. There was no risk to their merchandise. We weren't near anything of great value. My wife doesn't speak French, but I was right there and I do, while not fluently, more than well enough to translate his concerns if he spoke in words rather than guttural noises. I'm not sure that I've ever, in any culture or language, seen someone jump right to such hostile noise masking and body language over anything, much less something so trivial as a sealed bottle of water.
We still had a good time at the museum, saw some great artifacts, and learned a lot.