The core of the Višňová castle library was formed already in the 17th century, probably in Paderborn. Afew volumes come from the property of the archbishop of Cologne, Ferdinand August von Spiegel (1774–1835), but most of the items were collected by his brother Franz Wilhelm (1752–1815), a minister of the Electorate of Cologne, chief construction officer and the president of the Academic Council in Cologne. A significant group is formed by philosophical works: Franz Wilhelm’s collection comprised works by J. G. Herder, I. Kant, M. Mendelsohn as well as H. de Saint-Simon and J. von Sonnenfels. Another group consisted of historical works, e.g. by E. Gibbon; likewise his interest in the history of Christianity is noticeable. The library contains a total of more than 6,200 volumes, including 40 manuscripts, 3 incunabula and 15 printed books from 16th century; more than a half of the collection is formed by early printed books until the end of the 18th century. The other volumes come from the 19th century and the beginning of the 20th century. Volumes from the 17th century include especially Latin printed books on law, and one can perceive interest in collecting books on philosophy. There are many publications devoted to Westphalia; in addition, the library contains a number of binder’s volumes of legal dissertations from the end of the 17th century and the entire 18th century published in diverse German university towns. Further disciplines widely represented in the library are economics and especially agriculture, with the publications coming from the 18th and 19th centuries.