Answer: Würzburg Residence, Würzburg, Present day Germany
Step-by-step explanation:
Frederick Barbarossa was the Holly Roman Emperor, King of Italy, King of Germany and King of Burgundy. He was one of the most successful Holy Roman emperors and was skilled at virtually everything required of a leader at the time.
Frederick decided to marry Beatrice of Burgundy in 1156 at his residence in Würzburg after his marriage with his first wife, Adelaide of Vohburg, did not bring about any children.