Pfeffingen Castle (German: Ruine Pfeffingen) is a castle in the municipality of Pfeffingen of the canton of Basel-Land in Switzerland. It is a Swiss heritage site of national significance.[1]

Pfeffingen Castle is one of the largest castle ruins in the Basel-Land canton. The area around Aesch and Pfeffingen was originally home to a Franconian royal court. However, no remains have persisted since this time. In 1135 Notker von Pfeffingen was mentioned for the first time, which was probably a reference to Count von Saugers.

At the end of the 12th century, the Pfeffingen castle fell to the Count of Thierstein. In 1212 a family of Schaffner von Pfeffingen, who lived in the castle, was mentioned for the first time. In the mid-13th century the castle was comprehensively rebuilt. At this time, the curtain wall and the large residential tower were built. In 1335, the Bishop of Basel besieged the castle without success. [Wikipedia]