Quirini Castle ( Landhuis de Quirini )

The provided wikitext does not contain information about a structure named "Quirini Castle" or "Landhuis de Quirini." Instead, the text describes Chaumont-Gistoux, a municipality in the Walloon Brabant province of Belgium. Consequently, no details regarding the castle's location, construction year, architectural style, or specific history can be extracted from this source. The content focuses entirely on the administrative and geographic characteristics of the town itself, which was formed in 1977 through the fusion of several smaller villages including Dion-Valmont, Bonlez, and Corroy-le-Grand.

Chaumont-Gistoux is a semi-rural area covering approximately 48 square kilometers, known for its working farms, forests, and a historical industry of sand extraction that has largely declined. The municipality holds historical significance due to its location on the KW-line, a defensive barrier erected early in the Second World War to prevent invasion by Nazi Germany. Today, a small local museum preserves exhibits and information related to this defensive line. The administrative offices are situated in the village of Gistoux, and the area maintains a population density of roughly 227 inhabitants per square kilometer.

The region is also noted as the childhood home of Princess Claire of Belgium. The Coombs family continues to reside in the municipality, and Princess Claire, along with her husband Prince Laurent and their children, are frequently seen in the area. While the text lists various villages within the municipal boundaries such as Longueville and Vieusart, it offers no data on any castle named Quirini. Readers seeking information on that specific landmark would need to consult a different source, as this document serves only as a general overview of the Chaumont-Gistoux municipality.