Where: Bonheiden, Belgium Start of construction: 1888 End of construction: 1892 Accessible: yes, but limited and guided only Important fact: Built on the site of an earlier castle, probably from the 13th century. The park around the castle has been freely accessible since 2018. The castle and its outbuildings are currently being renovated (April 2020) to allow for further tourist expansion (events, parties, bed & breakfast, brasserie). https://www.bonheiden.be/kasteel-zellaer