Well worth a visit. Full of original roman mosaics well preserved to this day. Lots of historical knowledge about how Nimes was built and expanded upon. It was rather hot Inside even in Autumn, maybe air conditioning issue little uncomfortable. If you are carrying a backpack you have to use the cloakroom (it's free though). Please visit Garden Fontaine after visiting here for a greater understanding of the area. Overall well worth a couple of hours of your time.