Beiyi whistle coffin is famous for its glass industry besides shipping. Local people are accustomed to calling glass whistle. Dazheng whistle hall and Beiyi whistle coffin are the representative glass workshops of Xiaoyun. They make all kinds of small objects with glass in the workshop, each of which is crystal clear and delicate. [North whistle coffin] Address: 7-26 Sakaimachi, Otaru, Hokkaido Prefecture 047-0027 Business hours: 8:45-18:00. April 29-May 6 Golden Week 8:45-18:30. Tickets: Free Visit