Upper Rhine in the context of "Ludwigshafen"

The Electoral Palatinate was a constituent state of the Holy Roman Empire until it was annexed by the Electorate of Baden in 1803. From the end of the 13th century, its ruler was one of the Prince-electors who elected the Holy Roman Emperor, ranking them among the most significant secular Princes of the Holy Roman Empire.

The Palatinate consisted of a number of widely dispersed territories, ranging from the left bank of the Upper Rhine in the modern state of Rhineland-Palatinate, adjacent parts of the French regions of Alsace and Lorraine to the opposite territory on the east bank of the Rhine in present-day Hesse and Baden-Württemberg up to the Odenwald range and the southern Kraichgau region, containing the capital cities of Heidelberg and Mannheim.

The Alemanni or Alamanni were a confederation of Germanic tribes on the Upper Rhine River during the first millennium. First mentioned by Cassius Dio in the context of the campaign of Roman emperor Caracalla of 213 CE, the Alemanni captured the Agri Decumates in 260, and later expanded into present-day Alsace and northern Switzerland, leading to the establishment of the Old High German language in those regions, which by the eighth century were collectively referred to as Alamannia.

In 496, the Alemanni were conquered by the Frankish leader Clovis and incorporated into his dominions. Mentioned as still pagan allies of the Christian Franks, the Alemanni were gradually Christianized during the seventh century. The Lex Alamannorum is a record of their customary law during this period. Until the eighth century, Frankish suzerainty over Alemannia was mostly nominal. After an uprising by Theudebald, Duke of Alamannia, however, Carloman executed the Alamannic nobility and installed Frankish dukes.

Basel (/ˈbɑːzəl/ BAH-zəl; Swiss Standard German: [ˈbaːzl̩] ), also known as Basle (/bɑːl/ BAHL), is a city in northwestern Switzerland on the river Rhine (at the transition from the High to the Upper Rhine). Basel is Switzerland's third-most-populous city (after Zurich and Geneva), with 177,595 inhabitants within the city municipality limits.

Basel is commonly considered to be the cultural capital of Switzerland and the city is famous for its many museums, including the Kunstmuseum, which is the first collection of art accessible to the public in the world (1661) and the largest museum of art in Switzerland, the Fondation Beyeler (located in Riehen), the Museum Tinguely and the Museum of Contemporary Art, which is the first public museum of contemporary art in Europe. Forty museums are spread throughout the city-canton, making Basel one of the largest cultural centres in relation to its size and population in Europe. It is the hometown of Art Basel, the world's most prestigious and influential international art fair, showcasing modern and contemporary works from leading galleries and attracting top collectors, artists, and enthusiasts globally.

Karlsruhe (/ˈkɑːrlzruːə/ KARLZ-roo-ə; US also /ˈkɑːrls-/ KARLSS-; German: [ˈkaʁlsˌʁuːə] ; South Franconian: Kallsruh) is the third-largest city of the German state of Baden-Württemberg, after its capital Stuttgart and Mannheim, and the 22nd-largest city in the nation, with 308,436 inhabitants. It is also a former capital of Baden, a historic region named after Hohenbaden Castle in the city of Baden-Baden. Located on the right bank of the Rhine (Upper Rhine) near the French border, between the Mannheim-Ludwigshafen conurbation to the north and Strasbourg to the south, Karlsruhe is Germany's legal center, being home to the Federal Constitutional Court, the Federal Court of Justice and the Public Prosecutor General.

Karlsruhe was the capital of the Margraviate of Baden-Durlach (Durlach: 1565–1718; Karlsruhe: 1718–1771), the Margraviate of Baden (1771–1803), the Electorate of Baden (1803–1806), the Grand Duchy of Baden (1806–1918), and the Republic of Baden (1918–1945). Its most remarkable building is Karlsruhe Palace, which was built in 1715. It contains the Baden State Museum, the large cultural, art and regional history museum of the Baden region of Baden-Württemberg. There are nine institutions of higher education in the city, most notably the Karlsruhe Institute of Technology. Karlsruhe/Baden-Baden Airport is the second-busiest airport in Baden-Württemberg after Stuttgart Airport, and the 17th-busiest airport in Germany.

The international border between the modern states of France and Germany has a length of 450 km (280 mi). The southern portion of the border, between Saint-Louis at the border with Switzerland and Lauterbourg, follows the River Rhine (Upper Rhine) in a south-to-north direction through the Upper Rhine Plain. The border then turns westward until it reaches the tripoint between France, Germany and Luxembourg.

Bas-Rhin (French pronunciation: [bɑ ʁɛ̃] ) is a department in Alsace which is a part of the Grand Est region of France. The name means 'Lower Rhine', referring to its lower altitude among the two French Rhine departments: it is downstream of the Haut-Rhin (Upper Rhine) department. Both belong to the European Upper Rhine region. It is, with the Haut-Rhin (Upper Rhine), one of the two departments of the traditional Alsace region which until 1871, also included the area now known as the Territoire de Belfort. The more populous and densely populated of the pair, it had 1,152,662 inhabitants in 2021. The prefecture is based in Strasbourg. The INSEE and Post Code is 67.

On 1 January 2021, the departemental councils of Bas-Rhin and Haut-Rhin merged into the European Collectivity of Alsace.

Haut-Rhin (French pronunciation: [oʁɛ̃] ) is a department in the Grand Est region, France, bordering both Germany and Switzerland. It is named after the river Rhine. Its name means Upper Rhine. Haut-Rhin is the smaller and less populated of the two departments of the former administrative Alsace region, the other being Bas-Rhin (Lower Rhine), especially after the 1871 cession of the southern territory known since 1922 as the Territoire de Belfort, although it is still rather densely populated compared to the rest of metropolitan France. It had a population of 767,083 in 2021.

On 1 January 2021, the départemental collectivities of Bas-Rhin and Haut-Rhin were merged into the European Collectivity of Alsace.

Raetia or Rhaetia (/ˈriːʃ(i)ə/ REE-sh(ee-)ə, Latin: [ˈrae̯.ti.a]) was a province of the Roman Empire named after the Rhaetian people. It bordered on the west with the country of the Helvetii, on the east with Noricum, on the north with Vindelicia, on the south-west with Transalpine Gaul and on the south with Venetia et Histria, a region of Roman Italy.

It thus comprised the districts occupied in modern times by eastern and central Switzerland (containing the Upper Rhine and Lake Constance), southern Germany (Bavaria and most of Baden-Württemberg), Vorarlberg and the greater part of Tyrol in Austria, and part of northern Lombardy in Italy. The region of Vindelicia (today eastern Württemberg and western Bavaria) was annexed to the province at a later date than the others. The northern border of Raetia during the reigns of emperors Augustus and Tiberius was the River Danube. Later the Limes Germanicus marked the northern boundary, stretching for 166 km north of the Danube. Raetia was connected to Italy across the Alps over the Reschen Pass, by the Via Claudia Augusta.

Baden (/ˈbɑːdən/; German: [ˈbaːdn̩]) is a historical territory in southern Germany. In earlier times it was considered to be on both sides of the Upper Rhine, but since the Napoleonic Wars, it has been considered only East of the Rhine.