The 18 June - 2 July festival will feature 27 shows, 21 foreign performances in streets and squares, 14 domestic performances, 12 film screenings, four exhibitions, seven book launches, four sports programmes, and 47 workshops for more than 1,000 children.
Ten states will participate in the programme - Spain, Sweden, the Netherlands, Germany, Slovenia, the Czech Republic, Austria, Poland, Portugal, and Ukraine.
This year the festival is hosting 150 children from Ukraine, some of whom will be part of the audience and some, pupils from an art school in Lviv, will perform.
The opening of the festival was attended by Culture Minister Nina Obuljen Koržinek.
The festival is taking place under the auspices of President Zoran Milanović and with the financial support of the Culture Ministry.