Namahage is a traditional folk event on the Oga Peninsula. Namahage wears an ogre mask and cries out, "Are there any crying children?" and is mistaken for a bad guy who makes children cry.

In truth, however, he is a god who comes every New Year's Eve to warn people against laziness and to bring good health, good harvest in the fields, good harvest in the mountains, and good harvest in the sea.

The Namahage Museum introduces the history and culture of Namahage. The Namahage display corner features 150 diverse masks that were actually used in each village. In the Lore Hall, the movie "One Night of Namahage," which introduces the Namahage culture on New Year's Eve, is shown.

There is a corner where visitors can dress up in Namahage costumes and have their picture taken, and a souvenir corner where Namahage goods can be purchased. If you are lucky, you can watch a Namahage carver demonstrate hand-carving masks. (This event is held irregularly).

Next to the Namahage Museum is the Oga Mayama Folklore Museum, where Namahage demonstrations can be seen. Visit both and enjoy the Namahage, which has been registered as a UNESCO Intangible Cultural Heritage.