The digital cultural heritage of the University of Pavia is characterized by its size and variety: archival materials, ancient books, museum objects and documents related to the history and activity of the University make up one of the most important heritage for the study of Italian modern and contemporaneous literature and history. Until now, these materials could not be explored in an integrated way within a Digital Library. The differences in data models and metadata standards adopted made it impossible to guarantee interoperability between the different cultural resources. These problems have now been overcome through the use of DSpace-GLAM, an extension of DSpace specifically structured for cultural heritage management. The presentation starting from Pavia University case study illustrates how, after mapping different data structures on DSpace-GLAM flexible data model, it is possible not only to navigate through the pages of the various documents, but also to study the historical and geographical context of the digital objects, exploring people, events and places related to them; therefore, moving the application from a Digital Library to a Digital Humanities Platform.