Grand Duchy of the Lower Rhine

Koblenz was one of the - at last - three Regierungsbezirke of Rhineland-Palatinate, Germany, located in the north-east of the state. The region was created in 1815 as part of the Prussian Rhineland, becoming part of the new state of Rhineland-Palatinate in 1946. In 1968 the neighbouring Montabaur Region was dissolved and its territory annexed to Koblenz Region. Since 2000, the employees and assets of the Bezirksregierungen form the Aufsichts- und Dienstleistungsdirektion Trier (Supervisory and Service Directorate Trier) and the Struktur- und Genehmigungsdirektionen (Structural and Approval Directorates) Nord in Koblenz and Süd in Neustadt (Weinstraße). These administrations execute their authority over the whole state, i. e. the ADD Trier oversees all schools.

The Rhine Province (German: Rheinprovinz), also known as Rhenish Prussia (Rheinpreußen) or synonymous with the Rhineland (Rheinland), was the westernmost province of the Kingdom of Prussia and the Free State of Prussia, within the German Reich, from 1822 to 1946. It was created from the provinces of the Lower Rhine and Jülich-Cleves-Berg. Its capital was Koblenz and in 1939 it had 8 million inhabitants. The Province of Hohenzollern was militarily associated with the Oberpräsident of the Rhine Province. The Rhine Province was bounded on the north by the Netherlands, on the east by the Prussian provinces of Westphalia and Hesse-Nassau, and the grand duchy of Hesse-Darmstadt, on the southeast by the Palatinate (a district of the Kingdom of Bavaria), on the south and southwest by Lorraine, and on the west by Luxembourg, Belgium and the Netherlands. The small exclave district of Wetzlar, wedged between the grand duchy states Hesse-Nassau and Hesse-Darmstadt was also part of the Rhine Province. The principality of Birkenfeld, on the other hand, was an enclave of the Grand Duchy of Oldenburg, a separate state of the German Empire. In 1911, the extent of the province was 10,423 km2 (4,024 sq mi); its extreme length, from north to south, was nearly 200 km (120 mi), and its greatest breadth was just under 90 km (56 mi). It included about 200 km (120 mi) of the course of the Rhine, which formed the eastern border of the province from Bingen to Koblenz, and then flows in a north-northwesterly direction inside the province, approximately following its eastern border. It is now part of North Rhine-Westphalia, Rhineland-Palatinate, Saarland, and Hesse.

The Kastorbrunnen (Saint Castor's Fountain) in the forecourt of the Basilica of St. Kastor in Koblenz, Rhineland-Palatinate, Germany, is a curious testimony of the Napoleonic Wars. The fountain, built in 1812, was connected to the first aqueduct of the Elector Palatine.

Between Bingen and Bonn, Germany, the river Rhine flows as the Middle Rhine (German: Mittelrhein, pronounced [ˈmɪtl̩ˌʁaɪn] (listen)) through the Rhine Gorge, a formation created by erosion, which happened at about the same rate as an uplift in the region, leaving the river at about its original level, and the surrounding lands raised. This gorge is quite deep, about 130 metres (430 ft) from the top of the rocks down to the average water-line. The "Middle Rhine" is one of four sections (High Rhine, Upper Rhine, Middle Rhine, Lower Rhine) of the river between Lake Constance and the North Sea. The upper half of the Middle Rhine (Rhine Gorge) from Bingen (Rhine-kilometer 526) to Koblenz (Rhine-kilometer 593) is a UNESCO World Heritage Site as a striking cultural landscape with more than 40 castles and fortresses from the Middle Ages, unique terraced vineyards, and many wine-villages. The lower half from Koblenz (Rhine-kilometer 593) to Bonn (Rhine-kilometer 655) is famous for the formerly volcanic Siebengebirge with the Drachenfels volcano. Both parts together are known as "the romantic Rhine". The Middle Rhine Valley has been a major tourist attraction since the 19th century. It is also home to some 450,000 people. The valley owes its special appearance to both its natural shape and human alterations. For two millennia, it has been one of the most important routes for cultural exchange between the Mediterranean region and northern Europe. Situated in the heart of Europe, it was sometimes a border and sometimes a bridge between different cultures. The history of the valley reflects the history of Western Europe. With its many outstanding monuments, its hills full of vines, its settlements crowded on the narrow river banks, and the rows of castles lined up on the hill tops, it is considered the epitome of the Rhine romanticism. It inspired Heinrich Heine to write his famous poem "Lorelei" and Richard Wagner to write his opera Götterdämmerung. The vineyards along the Middle Rhine form the wine-growing region of the same name, see Mittelrhein (wine region).

The Basilica of St. Castor (German: Basilika St. Kastor or Kastorkirche) is the oldest church in Koblenz in the German state of Rhineland Palatinate. It is located near Deutsches Eck at the confluence of the Rhine and the Moselle. A fountain called Kastorbrunnen ("Castor well") was built in front of the basilica during Napoleon’s invasion of Russia in 1812. Pope John Paul II raised St. Castor to a basilica minor on 30 July 1991. This church is worth seeing for the historical events that have occurred in it, its extensive Romanesque construction and its largely traditional furnishings. Since 2002, the Basilica of St. Castor has been part of the UNESCO World Heritage cultural landscape of the Upper Middle Rhine Valley. In addition, it is a cultural property protected under the Hague Convention.

Deutsches Eck (German: [ˈdɔʏtʃəs ˈʔɛk], "German Corner") is the name of a promontory in Koblenz, Germany, where the Mosel river joins the Rhine. Named after a local commandry of the Teutonic Order ("Teutonischer Orden"), it became known for a monumental equestrian statue of William I, first German Emperor, erected in 1897 in appreciation of his role in the unification of Germany. One of many Emperor William monuments raised in the Prussian Rhine Province, it was destroyed in World War II and only the plinth was preserved as a memorial. Following German reunification, a replica of the statue was erected on the pedestal after controversial discussions in 1993. It is today a Koblenz monument and a popular tourist attraction.

The Moselle ( moh-ZEL, French: [mɔzɛl] (listen); German: Mosel [ˈmoːzl̩] (listen); Luxembourgish: Musel Luxembourgish pronunciation: [ˈmuzəl]) is a river that rises in the Vosges mountains and flows through north-eastern France and Luxembourg to western Germany. It is a left bank tributary of the Rhine, which it joins at Koblenz. A small part of Belgium is in its basin as it includes the Sauer and the Our. Its lower course "twists and turns its way between Trier and Koblenz along one of Germany's most beautiful river valleys." In this section the land to the north is the Eifel which stretches into Belgium; to the south lies the Hunsrück. The river flows through a region that was cultivated by the Romans. Today, its hillsides are covered by terraced vineyards where "some of the best Rieslings grow". Many castle ruins sit on the hilltops above wine villages and towns along the slopes. Traben-Trarbach with its art nouveau architecture and Bernkastel-Kues with its traditional market square are two of the many tourist attractions on the Moselle river.

Koblenz (UK: koh-BLENTS, US: KOH-blents, German: [ˈkoːblɛnts] (listen)) is a German city on the banks of the Rhine and the Moselle, a multinational tributary. Koblenz was established as a Roman military post by Drusus around 8 B.C. Its name originates from the Latin (ad) cōnfluentēs, meaning "(at the) confluence". The actual confluence is today known as the "German Corner", a symbol of the unification of Germany that features an equestrian statue of Emperor William I. The city celebrated its 2000th anniversary in 1992. It ranks in population behind Mainz and Ludwigshafen am Rhein to be the third-largest city in Rhineland-Palatinate. Its usual-residents' population is 112,000 (as at 2015). Koblenz lies in a narrow flood plain between high hill ranges, some reaching mountainous height, and is served by an express rail and autobahn network. It is part of the populous Rhineland.

The Old Castle (German: Alte Burg) was a former Elector-owned, substantial water castle in the German city of Koblenz, incepted in the 13th century. It is today reduced to the later Burghaus (castle house); which houses the city archives. It sits on tall foundations and has a tall, black slate roof with further floors in the attic and two small cupolas. The lowland castle abutted the remaining building in the old town quarter. The castle house stands tall, next to the Moselle's right-bank towpath downstream of the strategic Baldwin Bridge (lowest crossing of the river) built in 1342. The bridge, much-repaired, remains intact.

The Baldwin Bridge (German: Balduinbrücke) is a stone arch bridge over the Moselle in Koblenz, Germany. It is the oldest surviving bridge in the city and was built in the 14th century under Archbishop Baldwin of Luxembourg.

Koblenz-Lützel station is the oldest still-operating station in the city of Koblenz in the German state of Rhineland-Palatinate. It was built at the same time as the Koblenz Rhenish station (German: Rheinischer Bahnhof), which was abandoned in 1902 with the opening of the Koblenz Central Station (Hautptbahnhof) and destroyed in World War II. The station is located in the Koblenz suburb of Lützel, near the Moselle river and the Moselle railway bridge. It includes a passenger station and a freight yard. There was also a freight wagon repair shop, which is now closed and is now the site of the DB Museum, Koblenz. The now dismantled Koblenz-Lützel–Mayen Ost railway branched off the West Rhine Railway (the left bank line, German: Linke Rheinstrecke) in Koblenz-Lützel from 1904 to 2003. The Neuwied–Koblenz railway was built to connect the East Rhine Railway (the right bank line, Rechte Rheinstrecke) to the left bank line and the Moselle line, which is important for freight traffic, at Koblenz-Lützel station. Koblenz has had three stations in two kilometres on the left bank line with Koblenz-Lützel station, Koblenz Central Station and Koblenz City Centre Station (Koblenz Stadtmitte), completed of in 2011.

The Theater Koblenz is a multi-arts theatre with its own ensembles for drama, music theatre, puppetry and ballet located in Koblenz, Germany. It has about 190 permanent employees from 22 nations and offers 500 seats in a theatre building from the 18th century not far from the Electoral Palace. The manager until the end of the 2024/2025 season is Markus Dietze. Venues include the Theater am Deinhardplatz, rehearsal stages 2 and 4 as well as the Festung Ehrenbreitstein for the summer performances. In addition, the theatre participated in the Koblenz Fortress Plays for several years. In the 2009/2010 season, it was renamed from Theater der Stadt Koblenz to its current name. Since 1970, the Clemensbrunnen has stood on Deinhardplatz in front of the theatre.