Burg Eltz is a medieval castle

Castle

A castle is a type of fortified structure built in Europe and the Middle East during the Middle Ages by European nobility. Scholars debate the scope of the word castle, but usually consider it to be the private fortified residence of a lord or noble...

 nestled in the hills above the Moselle River

Moselle River

The Moselle is a river flowing through France, Luxembourg, and Germany. It is a left tributary of the Rhine, joining the Rhine at Koblenz. A small part of Belgium is also drained by the Mosel through the Our....

 between 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...

 and Trier

Trier

Trier, historically called in English Treves is a city in Germany on the banks of the Moselle. It is the oldest city in Germany, founded in or before 16 BC....

, 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 is still owned by a branch of the same family that lived there in the 12th century, 33 generations ago. The Rübenach and Rodendorf families' homes in the castle are open to the public, while the Kempenich branch of the family uses the other third of the castle. The Palace of Bürresheim, the Castle of Eltz and the Castle of Lissingen are the only castles on the left bank of the Rhine in Rhineland-Palatinate, which have never been destroyed
The castle is surrounded on three sides by the Elzbach

Elzbach

The Elzbach is a small river in Rhineland-Palatinate, Germany, a left tributary of the Moselle. It rises in the Eifel, near Kelberg. The Elz flows through Monreal and along the castle Burg Eltz. It flows into the Moselle in Moselkern, in the Verbandsgemeinde of Treis-Karden....

 River, a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 on the north side of the Moselle.