 The "Bibliotheca Thysiana" is the only surviving 17th century example in the Netherlands of a building that was designed as a public library.It is quite extraordinary that a complete private 17th century library has been preserved and thus offers a good impression of the book collection of a young, learned bibliophile from the period of late Humanism.The collection contains about 2,500 books and thousands of pamphlets in all scientific fields.