The main goal of the project is to develop European citizenship through increased knowledge of other cultures by creating and exchanging interesting materials based on the European UNESCO cultural heritage theme. In addition, the aim is to implement innovative practices and to exchange experiences related to STEAM (Science, Technology, Engineering, Arts and Math) on a European level. This will be accomplished by solving a UNESCO “crime” by means of performing various tasks which involve the STEAM area as well as UNESCO cultural heritage knowledge. This project is linked to the Erasmus+ project for schools „STEAM Time - Solve UNESCO Crime”, which started in September 2018 and will last 24 month, Five schools from Croatia, Italy, Netherlands, Poland and Romania will collaborate in this project. Twinspace will be used for communication between the pupils involved in the project.