Based on the context and the answer, generate a question. 

Context: The museum contained some interesting information about the Viking ages along with some replicas of the Viking ships they have found in the harbour nearby . Overall , however , it was a pretty boring museum that just seemed rather empty . I would not recommend a separate trip to go and see it . After leaving someone disappointed from the museum , we trekked back up the hill ( with a couple of rest / photo stops ) towards town .

Answer:

The authentic ones are too fragile to be put on display



why might the viking ships in the museum have been replicas ?