“Prague Shared and Divided” challenges the commonly held view of Prague as a city of a single nation. Prague is shown as a city shared by Czech- and German-speaking people whose fragile identities were not defined by space only, but rather by their language, the time they lived in, the political context, by prejudice and stereotypes. Such moveable everyday boundaries of shared and divided identities, which became more visible and of consequence during the time of World War II and the Holocaust, can be traced on our internet memory map and discovered during our guided tours through the city. Prague did not, however, become a static homogeneous place after World War II. After the expulsion of Prague Germans, new inhabitants came here, including for example Slovak Roma. The project is an open platform comprising contributions from experts from various fields, secondary school and university students from both the Czech Republic and abroad. Based on interviews with eyewitnesses, archive research of texts and audiovisual materials, we have created a historical mosaic of a multicultural city.