Through the Sister Cities program, Moscow, Milan, and Osaka are related to Chicago also.
The point of the program (started by President Eisenhower) is to “increase international trade, economic development, promote exchanges of culture, education, medicine, environment, technology & social service opportunities with its sister cities for the benefit of the City of Chicago, its residents and businesses.”
Okay, this sounds like nothing. But, according to the official website, there are grant opportunities for members. Cool for anyone wanting to study abroad.