The library contains approximately 360,000 titles, including almost 1,000 current periodicals, mainly available in systematic open stacks format. The relevant digital resources are also freely accessible. The library acquires approximately 6,500 new books annually. The library's thematic range includes source and research literature on art and cultural history from antiquity to the present, as well as selected literature from neighbouring disciplines. Although the initial scope included only central and southern Italy, this has been extended in recent years to include the Mediterranean region with its cultural links to Italy, in line with the research conducted at the institute. The significant collection of old and rare books, primarily on Roman and travel literature, some of which have already been digitised, will be expanded further as a separate focal point (see Rare Books project).