Burg Greifenstein is a hilltop castle overlooking the Danube in Lower Austria, likely erected in the 11th century by the Diocese of Passau and first documented in 1135. Perched on a rocky outcropping of the Wienerwald, it commands a scenic position across from Kreuzenstein Castle. Following romantic reconstruction in 1818 and development as a tourist destination in the 1960s, the castle sustained fire damage in 2006 and has been listed for sale since 2010. Despite its uncertain present status, Greifenstein remains architecturally and historically significant to the Danube region.
