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Valduc Abbey (French: Abbaye de Valduc, Dutch: Abdij van Hertogendal) was a Cistercian monastery for nuns founded around 1232. It was located in Hamme-Mille, a district of the current Belgian municipality Beauvechain. Following the French Revolution it was secularised and in 1800 the buildings were sold off as building material and consequently demolished. In 1867 a brick château was erected on the spot of the former monastery.