Tsunan town is an area that has drastic changes in its terrain and environment as it varies from 117 meters in altitude to 2145 meters at the top of Mount Naeba. As a result there are a variety of ecological environments that have adapted to these terrains. There is also the Sea of Japan climate with its characteristic heavy snowfall and rainfall. From this natural environment came the Jomon culture of Tsunan, and from those roots the mountain dwelling people.
The History and Folklore Museum has many items on display including a collection of flame-shaped pottery that was excavated from the Dodaira site which is a national cultural heritage asset, pottery artifacts from the Okinohara site which is a recognized heritage site for Niigata prefecture, as well as production tools from the mountainous area of Akiyamago which is a national heritage site.
There is also a preserved traditional thatched folk dwelling that is a heritage asset of Tsunan town. The thatched house is around 220 years old and was still being lived in until October 1974, and it has been preserved as it was at that time.