Hi-Story is a multilingual web-based educational project presenting the European history of the 20th-century. The issues have been selected and prepared by the team of international experts. The target groups are students and teachers. Designing process was preceded by focus group interviews. We have visualised the subject matter in an interactive, engaging and accessible way and underlining the awareness that neighbour countries could possibly have a different viewpoint on the same historical events. In addition to basic information about historical events user can find timelines, analyses and animations about the 1929 Great Crisis and the outbreak of First World War.