Schloss Leonstein, Medieval castle in Grünburg, Austria.

Schloss Leonstein is a castle on elevated ground in Grünburg featuring Renaissance elements, including a central courtyard with a fountain and stone lions. The building retains its historical structure while serving today as an administration and care facility.

Around 1397 Wilhelm von Rohr built a castle site with a farmyard at the foot of the Hausberg, whose castle Duke Albrecht III had besieged and destroyed in 1390. The Zelkinger family, who acquired shares in Leonstein in 1447 and 1459, turned the site into the valley castle Feichta. Count Georg Siegmund von Salburg bought castle and lordship in 1629; the Salburgs rebuilt Feichta in Baroque style in 1724 and called it Neu-Leonstein. The province of Upper Austria bought the estate from Count Theodor Salburg at the end of 1919 for 2,000,000 kronen.

The castle functions as a social support center, with staff working directly with young people and families who need guidance and assistance. Its modern purpose shows how historic buildings can serve the community while retaining their original charm.

Schloss Leonstein stands in the Steyrtal at Priethal, in the municipality of Grünburg, Traunviertel. The associated Hoftaverne, formerly Gasthof Hoftaverne or Hotel Grawatsch, is at Leonsteinerstraße 40. The building has housed a Landeskinderheim since 1945 and is not open to the public, so visits are only possible by arrangement with the administration.

The Hoftaverne inn that belonged to the castle was the former Gasthof Hoftaverne, also known as Hotel Grawatsch, at Leonsteinerstraße 40. The castle's beer cellar once held stores of the Leonstein brewery. Since November 1945 the building has housed a Landeskinderheim with four residential groups.