Burgruine Eppenstein is a ruined medieval castle overlooking Eppenstein in the Austrian state of Styria. It was built about 1000 AD as the ancestral seat of the Eppenstein dynasty, whose members served as Margraves of Styria and were enfeoffed with the Duchy of Carinthia in the 11th and 12th century.
The former spur castle is situated in the mountainous Upper Styria region, at a height of 736 metres aA. It stood above an important trade route running from the upper Mur valley across the Seetal Alps and Obdach Saddle down to the Carinthian Lavant valley.
Wikipedia https://en.wikipedia.org/wiki/Burgruine_Eppenstein
Official Website http://burgenkunde.at/steiermark/eppenstein/eppenstein.htm
Address 8741, Austria
Coordinates 47°7'50.892" N 14°44'9.703" E