Eltz Castle (German: Burg Eltz) is a medieval castle nestled in the hills above the Moselle River between Koblenz and Trier, Germany. It is still owned by a branch of the same family (the Eltz family) that lived there in the 12th century, 33 generations ago. The castle is surrounded on three sides by the Elzbach River, a tributary on the north side of the Moselle. It is on a 70-metre (230 ft) rock spur, on an important Roman trade route between rich farmlands and their markets. The Eltz Forest has been declared a nature reserve by Flora-Fauna-Habitat and Natura 2000.