In 1984, to commemorate the beginning of the relationship between the two cities, Koshigaya Park (Campbelltown) and Campbelltown Park (Koshigaya) were both constructed. A few years later, in 1989, Koshigaya City donated a tea house, which is apart of the stunning Japanese Gardens in the Campbelltown Arts Centre. In return, Campbelltown City donated a number of native birds to Koshigaya when the Campbelltown Forest of Wildbirds was officially opened in 1995.
What began as an agreement has developed into a more meaningful relationship. The Sister City bond has developed into a range of long-lasting exchange programs and activities that have taken place over the years and continue to this day. In both cities, it has given residents a global perspective on cultural connections through the values of friendship, respect and harmony.