 The eastern end of the borough of Düsseldorf-Vennhausen was attached to Unterbach during the reorganisation since it was already culturally associated with Unterbach.The name of the local part comes from the knights van Unterbeke, whose seat was the House of Unterbach – an old water castle, first mentioned as seat of the knights in 1169.The gallery of the lords of the House of Unterbach and their coats of arms are to be discovered elsewhere in Unterbach on the monument, which also serves as homeland and war memorial.