Editing Sigmaringen (section)

===Middle Ages===
In the 11th century, in the end of the [[Early Middle Ages]], the first castle was built on the rock that protected the valley. The first written reference<ref>Bericht in der Chronik des Kloster Petershausen: ''Von dort zog König Rudolf von Schwaben nach Burg ''Sigimaringin'' und belagerte sie. Als er aber erfuhr, dass König Heinrich IV. mit einem Heer über die Alpenpässe herannahte, um die Festung zu entsetzen, zog er ab und ging nach Sachsen.''</ref> dates from 1077, when King [[Rudolf of Rheinfelden]] tried in vain to conquer [[Sigmaringen Castle]]. The city was officially founded in 1250. In 1325, it was sold to [[Ulrich III, Count of Württemberg]]. In 1460 and 1500, the castle was rebuilt into a chateau. About the county of [[Werdenberg, Switzerland|Werdenberg]] Sigmaringen came in 1535 to be owned by the high noble family of the [[House of Hohenzollern|Hohenzollern]].