Prince-Bishopric of Basel

For the modern diocese, see Roman Catholic Diocese of Basel.
Prince-Bishopric of Basel
Fürstbistum Basel
State of the Holy Roman Empire

Coat of arms

Map of the Bishopric of Basel in the 16th century
Languages Franc-Comtais, High Alemannic
Government Elective principality
  Diocese established 740
   Elevated to
    Upper Rhenish Circle
  Swiss Reformation 1528
   Mediatised to Baden 1803
Preceded by
Succeeded by
Kingdom of Burgundy
Canton of Basel
Rauracian Republic
Margraviate of Baden
The Prince-Bishopric and the Canton of Basel

The Prince-Bishopric of Basel (German: Fürstbistum Basel) was a historical feudal state within the Holy Roman Empire, from 1032 ruled by Prince-Bishops, whose seat was at Basel until 1528, in Porrentruy until 1792 and in Schliengen for the rest. The final dissolution of the state was declared in 1803 as part of the German Mediatisation.

Besides the city of Basel itself, it comprised territories now in the Swiss cantons of Basel-Landschaft, Jura, Solothurn and Bern, besides minor territories in nearby portions of southern Germany and eastern France.


The city of Basel became episcopal seat in ca. 740, continuing the 4th century diocese of Augusta Raurica. In 999, Rudolph III of Burgundy presented the bishop of Basel with the abbey of Moutier-Grandval, establishing the bishopric as a secular vassal state of Burgundy with feudal authority over significant territories. After the death of Rudolph in 1032, the vassalage was converted to imperial immediacy, elevating the Bishop of Basel to the status of Prince-Bishop, ranking as an ecclesiastical Reichsfurst of the Holy Roman Empire.

The Prince-Bishopric reached the peak of its power during the late 12th to early 14th centuries. In the course of the 14th century, financial difficulties forced the bishops of Basel to sell parts of their territory. During the 15th century however, a number of politically and militarily successful bishops managed to regain some of the previously lost territories and Basel began to align itself with the Old Swiss Confederacy as an "associated city" (Zugewandter Ort).

Basel became the focal point of western Christendom during the 15th century Council of Basel (1431–1449), including the 1439 election of antipope Felix V. In 1459 Pope Pius II endowed the University of Basel where such notables as Erasmus of Rotterdam and Paracelsus later taught. Following the Imperial Reform of 1495, the prince-bishopric was part of the Upper Rhenish Circle of the Imperial Circle Estates.

In the 16th century the city of Basel and its surrounding territory acceded to the Old Swiss Confederacy (1501) as the Canton of Basel. It soon joined the Swiss Reformation (1528), forcing the bishop into exile in Porrentruy. The secular rule of the Prince-Bishops from this time was mostly limited to territories west of Basel, more or less corresponding to the modern canton of Jura.

The Prince-Bishopric lost most of its remaining territories to the Rauracian Republic in 1792 (converted into the French département of Mont-Terrible in the following year), retaining Schliengen as its sole dominion. Schliengen was made part of the Margraviate of Baden in the resolution of the Reichsdeputationshauptschluss of 1803, discontinuing the status of the bishops of Basel as secular rulers.


A Basel thaler, c. 1690

By the 16th century, the Prince-Bishopric of Basel comprised:

The Prince-Bishopric also held the following territories, which were lost before 1527:

See also


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