“Echoes of the past” is an interactive installation that collects, records, organizes and fuses the memories of the audience together. Visitors are invited to contribute by talking about their pleasant childhood memories, which are then presented as a collection. The system also considers the process of reconsolidation, revealing how fragile memories are and how they can change with the passage of time. An additional, pre-recorded video serves as a memory trigger next to the presented result.