Our common city, regional and European cultural heritage includes a wide range of tangible cultural artefacts, intangible forms of cultural expression and natural environments, preserved and passed on as a legacy from generation to generation, thus becoming part of our individual and collective identity, providing retrospective vistas on past developments and achievements, and a source of inspiration for the future. Heritage is not a fixed entity. The way it is developed, appropriated, enriched, promoted and transmitted changes over time, offering new ways of sharing. The public is becoming more active in presenting and sharing heritage. In this context, Sofia 2019 is making an effort to develop a networked heritage and to involve the public – citizens and visitors – more actively in preserving, contextualizing and analysing its past.