sentences:  Maasdam was founded nearby a substantial castle on the banks of the river Maas, the remaining foundations of which were discovered in 1958 in a parcel of land near the road in Maasdam known as "Kromme Elleboog".For a long time, it was assumed that the ruins in Maasdam were those of the castle Duivestein.However, it has more recently been suggested that the ruins could instead be those of a castle that belonged to the Lords of Weede.