Gösting Castle, Medieval castle ruin in Graz, Austria.

Gösting Castle is a castle ruin sitting on a forested hilltop at the northwestern edge of Graz, with the remains of a keep, a chapel, and sections of defensive wall still standing. The layout of the former fortification is still readable as you walk through the site, with open areas between the surviving stone structures.

The fortress was first recorded before 1042 and served for centuries as a stronghold guarding the Mur valley. In 1723, lightning struck the gunpowder store, triggering an explosion that left the site in the ruined state visitors see today.

The name Gösting comes from the district, not from a noble family: the castle was held by the Styrian princes from the 12th century until 1622, when Ferdinand II sold it to Hans Ulrich von Eggenberg. In 1707 it passed to the Counts of Attems, who moved to Schloss Gösting below after the 1723 fire. The Burgverein Gösting, founded in 1925, has maintained the ruin since.

The ruin stands at 574 m on a narrow ridge above the former Roman road; the walk from Göstinger Schlossplatz takes about 30 minutes on foot. The path to and around the ruin was officially closed after masonry collapsed in December 2020, but was open again by January 2022, with a projecting wall section strapped. Guided tours through much of the roofless area have been offered since 26 October 2022.

The ruin has been leased by the City of Graz for 50 years since 2021, and guided tours of the uncovered sections began on 26 October 2022, when around 2,000 visitors came. A projecting high section of wall is strapped with belts after masonry came loose. The castle association founded in 1925 still looks after the site.