The event has already passed — here are similar upcoming ones.
International children's festival with the participation of children from different countries.
Source: belgrade-beat.rs · updated October 4, Sunday · found a mistake? write to the bot
«57th International Meeting of Children of Europe under the slogan "A Hug for Everyone!"» — an event in Belgrade, October 3, Saturday. Venue: Children's Cultural Center. Participation: free. Registration — on the organizer's page, link above.