Château de Bierbais is a neoclassical mansion in Mont-Saint-Guibert, Belgium, set within a large English-style park. Dating to the 13th century in its origins as a noble estate, the château was reconstructed in its current form during the early 19th century. The ensemble showcases the evolution of aristocratic architecture, featuring the main château alongside the historic Tour des Saracens, a 12th-century keep built from local sandstone. The property is classified as a historic monument and includes a chapel within its grounds, with the renowned Orangeries of Bierbais nearby. This distinguished castle exemplifies Belgian heritage and noble lineage spanning centuries.