There were two Schauenburg castles near Frenkendorf , Alt ( or Old ) - Schauenburg about southwest of the village on the top of Chleiflüeli hill and Neu ( or New ) - Schauenburg to the west . A first castle was probably built for the Lords of Schauenburg in the 11th century , however nothing is known about it . In the 13th century the original castle was replaced by a new castle . The 1356 Basel earthquake destroyed much of it , but unlike Alt-Schauenburg , it was quickly rebuilt . The Schauenburg family became extinct in 1385 and the castle became a fief under the Bishop of Basel . In 1397 it was sold and then over the following centuries passed through several additional owners . However , by the 15th century , it had been abandoned and began to fall into ruin
1356 Basel earthquake
1356 Basel earthquake
Neu-Schauenburg Castle