Liebegg Castle is a small castle in the municipality of Gränichen in the canton of Aargau in Switzerland. It is located on a outcropping about 70m above the Wynental valley floor. The current castle grew out of a medieval castle. A cantonal agricultural school opened in 1958 near the castle.HistoryThe origins of the castle and the von Liebegg family are unclear, though they were probably a junior line of the von Trostburg family. The first castle was probably built in the 2nd half of the 12th century. About a century later the second castle was built south of the first. The first mention of the family is in 1241 when Burkhard I and Ludwig von Liebegg appear as witnesses in a document. At that time they were unfree knights in the service of the Counts of Kyburg. When the Kyburg line died out, the Habsburgs became the overlord over Liebegg. The Habsburgs granted a half share to the Twing of Liebegg to the von Liebegg family. The other half was given by the Habsburgs to the Lords of Aarburg, who in turn granted it as an under-fief to the von Liebeggs. In 1415 the city-state of Bern invaded and captured the Aargau region from the Habsburgs. The castle was not attacked and the von Liebegg family retained their lands and castle under the new rulers. However, in 1433 Johann oder Hemmann von Liebegg, the last male heir of the family, died.