The privilege of the three crowns Historical milestone · Borriana, La Plana Baixa, Castellón Image of Borriana, not of the place itself. Peter IV the Ceremonious rewarded the town's loyalty during the revolt of the Union by granting it the right to add to its banner a blue band with three crowns; Charles I extended the privilege to seals and coats of arms in 1542. 1348 Photo: Millars (CC BY-SA 4.0) What to see and do in Borriana