Today the Mundaneum in Belgium is an archives centre and a museum. But the origins of the Mundaneum go back to the late nineteenth century. Created in Brussels by two Belgian jurists, Paul Otlet (1868-1944), the father of documentation, and Henri La Fontaine (1854-1943), Nobel Peace Prize, the project aimed at gathering the entire world’s knowledge to file it using the Universal Decimal Classification system that they had created. Today their work is interpreted as the first paper search engine in History. The cultural project of the institution is both aimed at highlighting the heritage and questioning the future of access to knowledge.