KU Leuven has relations with many other (research) institutions, that might be interesting for you.
KADOC is the Interfaculty Documentation and Research Centre on Religion, Culture and Society at KU Leuven. Established in 1976, KADOC preserves and discloses an impressive collection of archives, data, and heritage that has emerged from the interplay between religion, culture and society in a Belgian, European and global context. The collections document interactions between Europe and the Americas, Asia and Africa that were intermediated by missionaries, political movements, churches, NGOs and migrants, as well as political and social developments such as the development of civil society, the welfare state, democratization, European integration, and secularization.
KADOC stimulates international research in its collections by organizing international conferences, by launching networks with European universities and partner-institutions, by publishing innovative studies, and by hosting junior and senior researchers from across the world.
Each year KADOC awards one fellowship to an international scholar (max. 10 years after PhD) working on topics related to its main research lines. Go here to read more.
Go here to read more about the Artes Erasmushuis.
Go here to read more about the Artes University Library.