Hoensbroek is a Dutch town in the municipality of Heerlen. It is situated in the southeast of Limburg, a province in the southeast of the Netherlands. Until 1982, Hoensbroek was a separate municipality.Hoensbroek is known for its medieval castle, Kasteel Hoensbroek, named after Knight Hoen, a member of the Hoen Family. It dates from around 1250.Hoensbroek is also known for the fair on Ascension Day (Hemelvaartsdag).