Colorado is fortunate to have 9 sister city relationships with Japan and one sister state/prefecture relationship.
1. Aspen - Shimukappu Village (Hokkaido)
2. Boulder - Yamagata City (Yamagata)
3. Broomfield - Ueda City (Nagano)
4. Canon - Kahoku City (Yamagata)
5. Colorado Springs - Fujiyoshida City (Yamanashi)
6. Denver - Takayama City (Gifu)
7. Frisco - Nishikawa Town (Yamagata)
8. Greeley - Moriya Town (Ibaraki)
9. Longmont - Chino City (Nagano)
10. Vail - Yamanouchi Town (Nagano)
11. State of Colorado - Yamagata Prefecture