The University Library Bern harbors a wide range of special collections featuring valuable and unique items. The Center of Historical Collections ZHB at Münstergasse Library specializes in the cataloging, accessibility, conservation and restoration of rare books, historic maps and archives. The most prominent collections are:
- The ‚Historic Library‘, i. e. the library collection of the Burgergemeinde Bern, the civic community of Bern. It features for example the printed works from the library of French scholar and diplomat Jacques Bongars (1554-1612) and the Ryhiner map collection, which was established by the Bernese statesman and geographer Johann Friedrich von Ryhiner (1732-1803).
- The Bernensia collection. The UB collects titles about the city and the canton of Bern as well as media by Bernese authors.
- The Rossica Europeana in the Swiss Library of Eastern Europe (SOB). They document Russia as portrayed in European publications, maps and illustrations from modern times (16th through 19th centuries).
- The Hermann Rorschach Archives and Museum. They are home to archival material of psychiatrist Hermann Rorschach, his students and followers, as well as publications on the Rorschach Test and related methods.