Kyoto became Boston's first Sister City in 1959. The two cities have in common a great wealth of history, education, culture, commerce, and strong neighborhood identities. As a tangible gesture of friendship toward the people of Boston, the City of Kyoto has donated a Japan House to the Boston Children's Museum.

Kyoto does not have just one sister city; it maintains a robust network of nine international sister cities to promote cultural exchange and global friendship. Its first sister city relationship was established with Paris, France, in 1958, reflecting their shared status as world capitals of culture and history. Other sister cities include Boston, Massachusetts (USA), which shares Kyoto's reputation as a hub for education and research; Cologne, Germany; Florence, Italy; and Kiev, Ukraine. It also maintains relationships with Prague (Czech Republic), Guadalajara (Mexico), Zagreb (Croatia), and Vientiane (Laos). These partnerships often involve exchange programs for students, artistic collaborations, and shared urban planning initiatives. For example, the Boston-Kyoto relationship has resulted in the "Japanese House" at the Boston Children's Museum. These bonds are a key part of Kyoto's "International City of Culture" identity, allowing the ancient city to stay connected with the modern world while preserving its traditional heritage through global dialogue and mutual respect.