Japan ‧ Yuzawa City, Akita Prefecture
Japan ‧ Eniwa City, Hokkaido
United States ‧ City of Irvine, Orange County, California
United States ‧ City of Long Beach, Los Angeles County, California
Japan ‧ Kagawa Prefecture
Japan ‧ Chiba Prefecture
Republic of Austria
United States ‧ Collin County, Texas
Republic of the Marshall Islands
United States ‧ New Mexico
United States ‧ San Bernardino County, California
Republic of Korea ‧ Mokpo City, South Jeolla Province
Kingdom of the Netherlands ‧ Utrecht Region
Japan ‧ Choshi City, Chiba Prefecture
Czech Republic ‧ City of Brno, South Moravian Region
Japan ‧ Miyazaki Prefecture