Concarneau (pop. 20,021), at the mouth of the river Moros, is France's third largest fishing port, an important tunny fishing and commercial center with numerous fish-canning plants.
The "closed city" is a 14th C stronghold enclosed by massive granite walls and towers which was enlarged by Vauban in the 17th C.
The former Arsenal is now occupied by the Musée de la Pêche (Fisheries Museum) which illustrates the history of the port and displays the various species of fish, the best known of which can be seen, live, in an aquarium.
Address: Fisheries Museum, Rue Vauban 3, F-29181 Concarneau, France
Hours:
January 1 to December 31: 10am-12pm, 2pm-6pm
July 1 to August 31: 9:30am-8pm
Disability Access: Full facilities for persons with disabilities.