I wish I could have looked inside. But these were placed on my cousin's farm by another beekeeper who wasn't around to ask permission. Not to mention the fact that I didn't bring my tools and veil along on this vacation!
It looks to me like the bottom (brood) boxes are extra insulated and designed to use supers very similar to the ones we use here. The top cover and the bottom boards look home-made, but I'm not sure. Does anyone else have hives like these?
I really think IKEA may have an opportunity here. The boxes could come flat-packed in cardboard and screw together with one allen wrench. You could have your choice of finish: light pine, dark green or traditional Swedish rust-red. It sounds very close to everything else they already sell!
BTW, I was also in Finland on that trip and looked at a lot of blooming flowers, but never saw a single bee! (Granted, I was in the city of Helsinki)