The Spanish National Library is one of the largest libraries in Europe. It was founded by King Philip V of Spain in 1712 as the Public Library of the Palace, and in 1836 its ownership was transferred to the Ministry of the Interior and it was then renamed the National Library of Spain. The library has an obligation to collect all material produced in Spain, as well as an interest in including publications about the country itself, the language or the authors of Spain, since it aspires to be a point of reference for the research of Spanish culture. The rich collection of the library today includes more than 26 million items, of which over 15 million are books and other printed publications. Among the numerous projects implemented by the library, the most notable is "ComunidadBNE", a crowdsourcing platform for working on the library's digital collections with the aim of nurturing and preserving heritage. The library has a valuable collection of old and rare materials, including about three thousand incunabula, 23 thousand manuscripts and 98 thousand rare books. A significant part of the library's material is digitized and available on the pages of the Spanish Digital Library created in 2008.