Decoster's house was a landmark location during the Battle of Waterloo. It stood on the eastern side of the Waterloo–Genappe main road south of the junction with the minor road to Plancenoit. According to Jean-Baptiste Decoster Napoleon spent the early part of the Battle of Waterloo and around Rossomme and then at about 17:00 moved to a position near Decoster's house where he remained until about 19:00.