NSK to host ARCA 2025, Croatia’s 23rd international innovation exhibition
16 – 18 October 2025
From 16 to 18 October 2025, the National and University Library in Zagreb (NSK) will host ARCA 2025, the 23rd Croatian international innovation exhibition.
Organised by The Croatian Union of Innovators, the exhibition will also include AGRO ARCA, the ARCA international fair presenting the latest products, services and technologies in the field of agriculture. It will feature numerous innovations developed by individuals, research teams in private sector businesses and public sector enterprises, academic institutions and public institutes, as well as by high-profile companies and start-ups from Croatia and abroad.
ARCA 2025 will also present innovations by Croatian students, secondary and even primary school students, who will be able to take part in a wide variety of activities and STEM-focused workshops.
ARCA – Croatia’s innovation hub
As the largest gathering of inventors and innovators in Croatia and as such included in the calendar of events of the International Federation of Inventors’ Associations (IFIA), one of the exhibition’s co-organisers, ARCA 2025 will bring together innovators from as many as 25 countries.

Also, the exhibition’s edition this year will host the IFIA general assembly, which is held every two years and addresses various issues related to the Federation’s general policy and development strategy.
Opening on 16 October 2025, ARCA 2025 will be taking place by 18 October, when it will traditionally close with the awards ceremony as part of which the best innovation at the exhibition will be awarded ARCA Innovation Grand Prix, the exhibition’s top prize.
Make sure you do not miss out on this celebration of innovation and progress – entry to all the exhibition events is free of charge!