‘Monasteries in the Netherlands until 1800: a census’ is a database that includes all monasteries, collegiate churches, granges and refuges, until 1800 within the current borders of the Netherlands. The database is compiled by prof. em. dr. Koen Goudriaan (Factulty of Humanities). The database forms the basis of the ‘Map of Monasteries’ and allows for extensive queries. Available in English and Dutch language.