St_Nazaire is well remembered from the 2nd world war as a major German submarine base. Site of a famous raid by British Commando’s. There is a wonderful museum which can be visited in 3 parts.
Firstly a very good interactive mock-up of a cruise liner through the ages, showing how they evolved and who used them. Secondly the main attraction of a visit and tour with personal electronic voice guides explaining how the submarine worked and where it went etc and how they lived.
It is has also continued to be the premiere French shipbuilding base and is home to Airbus factories and many other major manufacturers.