A sumo museum located on the second floor of the Umi no Eki Wando. It showcases items related to Maino Umi, a former komusubi from Ajigasawa who thrilled the ring with his skill despite being small in stature, including ceremonial mawashi and hair cut during retirement ceremonies. Visitors can also enjoy a selection of 20 matches handpicked from Maino Umi's career on a large screen.

A comprehensive cultural facility that serves as a base for the tourism of the Buddhist and Shimokita Peninsula. The site is equipped with a pier for regular sightseeing boats to and from the country's designated natural monument, Bukepo. It also has a large parking lot and can be used as a resting place for people traveling on the Shimokita Peninsula. On the first floor, there is a souvenir shop with local specialties, the sale of Buddhist fissures, and a tourist information center. On the second floor, there is a restaurant, a ramen shop, and a coffee shop where you can enjoy seafood dishes using local ingredients. There is a strait mujium that displays the history and culture of Sai.

At the time of the Russo-Japanese War, Jotaro Mikami, who served as a military doctor, made a hand-stitched Red Cross flag to save the lives of many soldiers, and was praised by the world. In memory of the feat, his birthplace is restored and exposed.

A huge rock that also seems to be a man and a woman cuddling up to each other is a sacred rock. It is said that since ancient times, there has been a custom to ask for a wish to be able to communicate, and it has become a hidden sacred place for lovers.