Handmade paper? I'm game. I bought a small supply of lovely paper from the shop and one would think this is a gimmick but some people actually order piles to their home and it took a long time to check out. Velké Losiny isn't unique in the world and there are several other locations in Europe that are similar so they finally started talking to other sites in Germany, Poland and France. A serial combination has a better chance and alone I would have dismissed it as "nice but not good enough". Now that this is perhaps a serious contender I felt to add a review after all.
Inside is a great museum. Keep in mind I went a couple of years ago and maybe things have changed but tours were only in Czech with audio guide in other languages. You can point at a dot in the room to start the info and they often don't show that clearly, something they should improve on. The information you get is good though. There are also 2 kind of tours, 30 and 60 minutes, unfortunately I don't quite remember which one I took.
The tour starts with information on paper, as we know it's a Chinese invention and they have Chinese cartoons to show it, cute. A chart shows the spread from China across the Middle-East and into southern Europe. The next parts of the museum are the machines used to make the paper in the mill. At one point you can also see the staff interact to flatten the paper - not easy work. Don't forget to visit the gift shop!
Czechia's mix of castles, old towns, nature, horse stables and now this thrown into the mix makes it diverse and interesting to visit.