Alt Homberg was built around 1100 for the Counts of Homberg on a triangular hilltop north of the village of Wittnau . The first recorded Count of Homberg , Rudolf , appears in a record in 1082 when he married Ita von Habsburg . In 1225 the Homberg line died out and the castle was inherited by the Counts of Frohburg . Over the following years a cadet line of the Frohburg family took the name Neu-Homberg and established a new castle Neu-Homburg near Läufelfingen . In 1323 the last Count of Neu-Homberg , Werner III , died and the castle was inherited by Countess Maria von Oettingen . She sold it on 8 August 1351 to Duke Albrecht of Austria for 400 Marks . On 18 October 1356 the castle was destroyed in the Basel earthquake . After the earthquake the chapel and portions of the castle were quickly rebuilt , but by 1486 it was recorded as the '' barren castle of Weitnauw '' . The castle was excavated in 1882-84 . Many of the artifacts , dating from the 11th to 15th centuries , are on display in the Historical Museum of Lenzburg Castle
Basel earthquake
1356 Basel earthquake
Alt Homberg Castle