La tumba de César Borgia Historical milestone · Viana, Tierra Estella, Navarra César Borgia, son of Pope Alexander VI and a famous Renaissance captain, died near Viana on 11 March 1507 while fighting in the service of the King of Navarre and was buried in the town's church of Santa María, before his remains were later moved outside the church. 1507-03-11 Photo: Pathferrero (CC BY-SA 4.0) What to see and do in Viana