The largest and oldest church of the city is the St. Walburgis (Saint Walpurga) church, which originally dates from the eleventh century. The present Gothic building contains monuments of the former counts of Zutphen, a fourteenth-century candelabrum, an elaborate copper font (1527), and a monument to the Van Heeckeren family (1700). The chapter-house's library () contains a pre-Reformation collection, including some valuable manuscripts and incunabula. It is considered one of only five remaining medieval libraries in Europe (the others being in England and Italy). This chained library's books are still chained to their ancient wooden desk – a custom from centuries ago, when the "public library" used chains to prevent theft.