- Warsaw (Poland): Signed the Agreement in October 1990
- Rochester (America): Signed the Agreement in October 1996
became Sister Cities in October 2006 - Prague National Theater (Czech Republic): Signed an exchange agreement in October 1995 with Act City Hamamatsu
Hamamatsu, City of Music
Hamamatsu has come to be known as one of Japan’s prime industrial centers for the production of textiles, motorcycles, and powerboats; it is also the leader in the musical instrument industry, especially that of pianos. We have great pride in the excellence of our technology which is recognized not only by the nation, but by the entire world. Considering that nearly all of Japan's pianos are produced in Hamamatsu even today, we believe that the city is ideally suited to be a city of music.
This "city of music" movement has given rise to a number of policies and cultural projects since its inception in 1979. Some examples include international competitions and public performances of the highest caliber; the establishment of Act City and the Museum of Musical Instruments; and various activities initiated by the residents themselves.
This musical culture is an irreplaceable treasure that belongs to the public that fostered it. The city is determined to continue its realization of "a city of music" in which tradition, the arts and lifelong learning are balanced with our other achievements.