Since 1989, Estia Pieridon Mouson is a member of the International Council of Organizations of Folklore Festivals and Folk Arts, CIOFF, organizing an international folklore festival annually according to the organization's rules.
Seit 1989 ist die Estia Pieridon Mouson Mitglied des International Council of Organizations of Folklore Festivals and Folk Arts, CIOFF und richtet jährlich nach den Regeln der Organisation ein internationales Folklore-Festival aus.