Burg Rabenstein, Frohnleiten, Medieval fortress in Frohnleiten, Austria.

Burg Rabenstein sits on a rocky outcrop above the Mur River valley in Styria, positioned to command the passage through this region. The structure combines medieval architecture with modern exhibition spaces inside.

The site was named after Hartnid Schenk von Rammenstein, who held his seat there from 1240 to 1276. The old castle burned down at the end of the 15th century and was not rebuilt. The standing Schloss dates from the 14th century; King Maximilian I enfeoffed the ruined Rabenstein to the Harrach family in 1497, and Lienhard von Harrach sold it to Philipp von Breuner in 1543.

The castle's name comes from Hartnid Schenk von Rammenstein, who held his seat there from 1240 to 1276; the original form was Rammenstein. After 2005 Werner Hochegger converted the site into an event venue with a modern annex and guest quarters. The Rittersaal's stucco was made by Alexander Serenio.

A panoramic lift connects the parking area in the valley directly to the castle, making access straightforward for visitors. The lot below can accommodate cars for those arriving by vehicle.

Above the castle, reached through a rock tunnel and a lift, lies a retreat of about 198 m², higher than the castle itself. The whole complex totals some 2,700 m² of floor space, and several lifts connect its floors barrier-free. The courtyard, roughly 400 m², has a circular path paved with granite setts.