Tsunashima is located in the southern part of Yokohama City, facing Tokyo Bay. It is relatively accessible by train and car from the center of Yokohama City, and the area has been used for farming and fishing. Even today, it continues to develop as a residential and commercial area. Many people choose this area as a comfortable place to live since transportation to Yokohama City and central Tokyo is convenient and accessible. A picture book titled Tale of Shinsui Building: Four Gods of Birds has been completed.