Takayama is up in the mountains, a couple of hours by train from Nagoya. It's a lovely place to visit - still had some of the famous cherry blossoms (Sakura) flowering which was a bonus, as well as lots of great shopping and eating.
We visited a re-creation of a traditional mountain village. The houses are built with steep, sloping and very thick thatched roofs to withstand severe snow falls in winter. It was quite cold when we were there, but fine and sunny.