Good fishery museum at the harbour of Lunenburg. Much to see. Enjoyable for both children and adults. You can see the stages of the production of ships, can walk on some ships and it has several aquariums! The sea creatures are secretely often getting the attention of adults too, as it's just cool to see.
Another fun thing about the museum was a giant lobster trap where you could get in, signed with "Trapped at the Fisheries Museum of the Atlantic" :) In short: interesting and fun museum, don't forget to check it out if you happen to be on Nova Scotia!