section_path: History/Early history
section_name: Early history
paragraph_text: Early history
  
  There are traces of a settlement at the nearby Rhine knee from the early La Tène period (5th century BC). In the 2nd century BC, there was a village of the Raurici at the site of Basel-Gasfabrik (to the northwest of the Old City, and likely identical with the town of Arialbinnum that was mentioned on the Tabula Peutingeriana). The unfortified settlement was abandoned in the 1st century BC in favour of an oppidum on the site of Basel Minster, probably in reaction to the Roman invasion of Gaul.
  
  In Roman Gaul, Augusta Raurica was established some 20 km (12 mi) from Basel as the regional administrative centre, while a castrum (fortified camp) was built on the site of the Celtic oppidum. In AD 83, the area was incorporated into the Roman province of Germania Superior. The Roman Senator Munatius Plancus is known as the traditional founder of Basel since the Renaissance. Roman control over the area deteriorated in the 3rd century, and Basel became an outpost of the Provincia Maxima Sequanorum formed by Diocletian. Basilia is first named by the Ammianus Marcellinus in his Res Gestae as part of the Roman military fortifications along the Rhine in the late 4th century.
  
  The Germanic confederation of the Alemanni attempted to cross the Rhine several times in the 4th century, but were repelled; one such event was the Battle of Solicinium (368). However, in the great invasion of AD 406, the Alemanni appear to have crossed the Rhine a final time, conquering and then settling what is today Alsace and a large part of the Swiss Plateau.
  
  The Duchy of Alemannia fell under Frankish rule in the 6th century. The Alemannic and Frankish settlement of Basel gradually grew around the old Roman castle in the 6th and 7th century. It appears that Basel surpassed the ancient regional capital of Augusta Raurica by the 7th century; based on the evidence of a gold tremissis (a small gold coin with the value of a third of a solidus) with the inscription Basilia fit, Basel seems to have minted its own coins in the 7th century.
  
  Basel at this time was part of the Archdiocese of Besançon. A separate bishopric of Basel, replacing the ancient bishopric of Augusta Raurica, was established in the 8th century. Under bishop Haito (r. 806–823), the first cathedral was built on the site of the Roman castle (replaced by a Romanesque structure consecrated in 1019).
  
  At the partition of the Carolingian Empire through the Treaty of Verdun in 843, Basel was first given to West Francia and became its German exclave. It passed to East Francia with the Treaty of Meerssen of 870. Basel was destroyed by the Magyars in 917. The rebuilt town became part of Upper Burgundy, and as such was incorporated into the Holy Roman Empire in 1032.