Burgruine Weitenegg, Castle ruin in Leiben, Austria.

Burgruine Weitenegg sits on a narrow ridge high above the Danube and consists of multiple levels with thick stone walls and two towers. The complex spreads across the site with separate courtyard areas divided by walls, showing how defensively the castle was designed.

The first written record of the castle dates to 1108, when it was already an important stronghold in the region. Over several centuries it was repeatedly expanded before losing importance from the 18th century onward and eventually falling into ruin.

The name Weitenegg is first documented in 1108 through Luipold Widenich. From the end of the 12th century until 1513 the county passed through a changing series of owners, among them the counts of Tengling-Peilstein, who built the castle in the 12th century, and the Pernegg family, to whom it passed in 1150. Since 1983 the ruin has belonged to the Wipplinger family.

The ruin is privately owned by the Wipplinger family, who bought it in 1983, and it is not open to the public, so visits are limited to viewing the exterior. The complex stands on a narrow ridge above the Danube in the Leiben municipality; the eastern bergfried was largely removed in 1870, so the remaining walls and courtyards are best seen from outside.

The eastern bergfried was almost entirely dismantled in 1870, and its stone was reused to enlarge the Ultramarin factory at Weitenegg. The ruin is privately owned: the Wipplinger family bought it in 1983, and it is not open to the public.