Eni’s Historical Archive, inaugurated in 2006, is located in Castel Gandolfo, inside Villa Montecucco, a nineteenth-century building overlooking Lake Albano, just over 20 km from Rome. The Archive contains over 5 kilometres of documents, about 5,000 audiovisual documents, 50,000 technical drawings and 500,000 photographs. A heritage that tells the story of Eni and its companies, of Italy’s energy policy and oil industry since the early twentieth century. In terms of the company’s role in Italian history, especially following World War 2, Eni’s Historical Archive also represents a fundamental viewpoint for the understanding of the crucial years of Italian reconstruction, foreign policy, and strategic and economic choices. An extraordinary historical heritage carefully preserved and made available to anyone who would wish to see it. Wide, bright spaces, large tables placed under direct natural light, computer desks where to analyse inventories, photocopiers, scanners, audiovisual equipment including slide and plate viewers. The whole heritage material is stored on compact shelves and the areas dedicated to its conservation are equipped with temperature and humidity monitoring systems. Special containers for the conservation of the different types of documents make our premises the ideal environment for long-term conservation.