Greifenstein Castle lies in the eponymous village of Greifenstein in the county of Lahn-Dill-Kreis in Middle Hesse, Germany. It is a geo point in the national geopark of Westerwald-Lahn-Taunus.

Greifenstein is a municipality in the Lahn-Dill-Kreis in Hesse, Germany. Its administrative seat is Beilstein. Greifenstein covers 67.43 km2 on the eastern slope of the Westerwald range. It was named for the castle of the same name in the constituent community of the same name. This is the site of the German Bell Museum, which holds about 50 bells that show the historical development of bell pouring and manufacture.