Sirgenstein Castle
Sirgenstein Castle (German: Burgrest Sirgenstein) is a ruined castle on rock, over twenty metres high, with a cave inhabited in the Stone Age, the Sirgenstein, between the town of Blaubeuren and hamlet of Schelklingen in Alb-Donau-Kreis in Baden-Württemberg.
The rock castle was probably built in the 13th century. Today its visible remains include castle walls, rusticated ashlar blocks and a neck ditch.
Coordinates: 48°23′15″N 9°45′37″E / 48.38750°N 9.76028°E
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