Oberlahnstein is a part of the city of Lahnstein

Lahnstein

Lahnstein is a verband-free town of Rhein-Lahn-Kreis in Rhineland-Palatinate, Germany. It is situated at the confluence of the Lahn River with the Rhine, approximately south of Koblenz...

 in Rhineland-Palatinate

Rhineland-Palatinate

Rhineland-Palatinate is one of the 16 states of the Federal Republic of Germany. It has an area of and about four million inhabitants. The capital is Mainz. English speakers also commonly refer to the state by its German name, Rheinland-Pfalz ....

 in Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. It lies on the right bank of the Rhine, at the confluence of the Lahn

Lahn

The Lahn River is a -long, right tributary of the Rhine River in Germany. Its course passes through the federal states of North Rhine-Westphalia , Hesse , and Rhineland-Palatinate ....

 4 m. above Koblenz

Koblenz

Koblenz is a German city situated on both banks of the Rhine at its confluence with the Moselle, where the Deutsches Eck and its monument are situated.As Koblenz was one of the military posts established by Drusus about 8 BC, the...

, on the Right Rhine railway from Cologne

Cologne

Cologne is Germany's fourth-largest city , and is the largest city both in the Germany Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the major European metropolitan areas with more than ten million inhabitants.Cologne is located on both sides of the...

 to Frankfurt-on-Main. It is part of the municipality Lahnstein

Lahnstein

Lahnstein is a verband-free town of Rhein-Lahn-Kreis in Rhineland-Palatinate, Germany. It is situated at the confluence of the Lahn River with the Rhine, approximately south of Koblenz...

.

Oberlahnstein still retains parts of its ancient walls and towers, and possesses a castle, the Schloss Martinsburg, formerly the residence of the electors

Prince-elector

The Prince-electors of the Holy Roman Empire were the members of the electoral college of the Holy Roman Empire, having the function of electing the Roman king or, from the middle of the 16th century onwards, directly the Holy Roman Emperor.The heir-apparent to a prince-elector was known as an...

 of Mainz

Mainz

Mainz under the Holy Roman Empire, and previously was a Roman fort city which commanded the west bank of the Rhine and formed part of the northernmost frontier of the Roman Empire...

, and the chapel, Marien Kapelle, in which the German king Wenceslaus

Wenceslaus, King of the Romans

Wenceslaus ) was, by election, German King from 1376 and, by inheritance, King of Bohemia from 1378. He was the third Bohemian and second German monarch of the Luxembourg dynasty...

 was deposed by the electors in 1400. Near the town is the castle of Lahneck, built about 1290, destroyed by the French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 in 1689, and restored in 1854. In the neighborhood are lead

Lead

Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...

 and silver

Silver

Silver is a metallic chemical element with the chemical symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal...

mines.