The seat of the Municipal Library in Via Cantorrivo, housed in the former public wash house dating back to the nineteenth century, thanks to the particular modern architecture characterized by large windows is also very attractive for the heritage it contains, almost twenty thousand volumes and a large documentary kit that manages to serve a wide range of users.
The Bishop’s Palace houses the historical archive of the Dioceses of Castro and Acquapendente on the first floor. In recent years, under the coordination of the manager Prof. Luciano Osbat, the documentation stored in the archive has been rearranged and the inventories can be consulted both on site and online at www.centrodocumentazioneviterbo.it. The present documentation has a dating between the fifteenth century. and the 21st century.