Be that as it may, the history of our town begins in the year 1050. It is most probable that the silence regarding the place--it is not mentioned among the places visited by Conrad II. in this neighborhood--points to the fact that the castle did not exist in 1025, but was built between that year and 1050. That it existed then we know, for Henry III. dated a document from here in 1050, summoning a council of Bavarian nobles "to his estate Nourinberc." The oldest portion, called in the fifteenth century Altnürnberg, consisted of the Fünfeckiger Thurm--the Five-cornered tower--the rooms attached and the Otmarkapelle. The latter was burned down in 1420, rebuilt in 1428, and called the Walpurgiskapelle. These constituted the Burggräfliche Burg--the Burggraf's Castle. The rest of the castle was built on by Friedrich der Rotbart (Barbarossa), and called the Kaiserliche Burg. The old Five-cornered tower and the surrounding ground was the private property of the Burggraf, and he was appointed by the Emperor as imperial officer of the Kaiserliche Burg. Whether the Emperors claimed any rights of personal property over Nuremberg or merely treated it, at first, as imperial property, it is difficult to determine. The castle at any rate was probably built to secure whatever rights were claimed, and to serve generally as an imperial stronghold. Gradually around the castle grew up the straggling streets of Nuremberg. Settlers built beneath the shadow of the Burg. The very names of the streets suggest the vicinity of a camp or fortress. Söldnerstrasse, Schmiedstrasse, and so forth, betray the military origin of the present busy commercial town. From one cause or another a mixture of races, of Germanic and non-Germanic, of Slavonic and Frankish elements, seems to have occurred among the inhabitants of the growing village, producing a special blend which in dialect, in customs, and in dress was soon noticed by the neighbors as unique, and stamping the art and development of Nuremberg with that peculiar character which has never left it.