Kaiserpfalz

The term Kaiserpfalz (German: [ˈkaɪzɐˌpfalts], "imperial palace") or Königspfalz (German: [ˈkøːnɪçsˌpfalts], "royal palace", from Middle High German phal[en]ze to Old High German phalanza from Middle Latin palatia [plural] to Latin palatium "palace"^[1]) refers to a number of palaces and castles across the Holy Roman Empire that served as temporary seats of power for the Holy Roman Emperor in the Early and High Middle Ages.

The dukes and bishops of the empire also owned palaces, which were sometimes referred to as "pfalzen", especially since they were obliged to accommodate the emperor and his court when they were in transit, a duty referred to as Gastungspflicht (obligation to accommodate).