The first mention of the locality appears in a feudal investiture of 1199 in which Obizzo and Giulio Ardizzoni, who owned the castle together with Ghislerio Ardizzoni, sold their share to Obizzo Visdomini; but the construction of the current manor dates back to 1177 as evidenced by the inscription carved inside it (MCLXXVII fuit factum hoc castrum), its construction is due to the Del Cairo family from Piacenza. In 1323 Oberto Del Cairo sold it to Lancelot Anguissola, a valiant warrior and great poet. Riva, together with the nearby castles of Montesanto and Veano (or Bicchignano), formed an outpost to protect the territories of the Anguissola family, who owned the low hilly strip of Val Luretta, Val Trebbia and a good part of Val Nure. In 1546 it passed to Ottavio Farnese, to arrive with various changes of ownership (Maggi, Cusani, Sforza-Fogliani and Scribani-Rossi) in 1884 to the Roman nobles Rispoli who entrusted the renovation and restoration works to the architect Colla, who had previously supervised the restoration of the Gothic palace of Piacenza, which, according to some interpretations, completed its work very well, according to others it carried out arbitrary modifications which diminished the importance of this typical medieval castle.[citation needed] Now the castle belongs to the Fioruzzi nobles, who completed the renovation of the internal park as well. Inside the castle there is a well whose water comes from an ancient conduit starting from Montesanto.