1.  Sayama, Japan, from 1979-02-21
 2.  Boston, United States, from 1982-05-01
 3.  Baguio, Philippines, from 1982-08-13
 4.  Leeds, United Kingdom, from 1988-06-08
 5.  Fukui, Japan, from 1989-11-23
 6.  Yeosu, South Korea, from 1994-11-01
 7.  Nice, France, from 1998-03-30
 8.  Paramaribo, Suriname, from 1998-05-23
 9.  Budapest, Hungary, from 1999-08-09
 10.Beit Shemesh, Israel, from 2000-03-12
 11.Agadir, Morocco, from 2000-06-29
 12.Curitiba, Brazil, from 2001-09-19
 13.Kazan, Russia, from 2003-10-16
 14.Cape Town, South Africa, from 2005-04-18
 15.Oviedo, Spain, from 2006-05-12