We have been there last summer. This place isnt only the sword museum but also you could see how to make sword. At the museum, there are lots of histrical sword. Even thought there are some unknown creater of some swords, they look so well maintained. We have see the master and his trainers making sword for prob 30-45 min. It was very hot in summer time but they wouldnt finish making sword at only one visit so we should go back again sometimes to see the swords finish.
At the gift shops, they sell nice little sword for about 3000 yen which I thought good for gift as protection sword for 20th celebration for your grand daughter.