The “Old Church of St Peter”:https://www.silvertraveladvisor.com/review/attraction/205334-review-the-old-church-of-st-peter-and-the-archaeological-museum has been an archaeological museum since 1872. The displays don’t look as if they have been touched since then. There is no attempt to display them with stones piled on top of each other and in no apparent order. It is a wonderful hotch potch of finds with little written information. It is a real step back into the past. Don’t come expecting to learn a lot about Roman remains. Just come and enjoy it…. The church building is pretty good too!
There is a more “modern”:https://www.france-voyage.com/tourism/archaeological-site-saint-romain-gal-673.htm archaeology museum on the other side of the river in St Romain-en-Gal. Part of the Roman city has been excavated and turned into an archaeological park with the remains of villas, workshops, baths and other buildings. It looks at the social history with commerce and trade providing the source of wealth for the inhabitants. It is a very different presentation to that in St Pierre.
This was Day 4 of Burgundy, the River Rhone and Provence, a river cruise with Riviera Travel.
My full account with all the pictures can be found “here.”:http://wasleys.org.uk/eleanor/otherholidays/rhone/index.html