volumes, the surplus space was soon filled. Book storage space had to be extended continuously. One hundred years later, the complete library, including departmental and subject libraries, comprised more than 4.3 million volumes.

By 2026, the University Library of the University of Vienna comprises the Main Library and the 33 specialist libraries at various university locations throughout Vienna and is the largest library in Austria (approximately 7.8 million volumes). In addition to contemporary scientific literature,