The first church on the site was built in the Early Middle Ages , possibly as early as the 6th century but certainly by the 8th century . It is first mentioned in 793 . Around 1000 the nave was extended toward the west . The second church was built around 1100 . This new building had a wider and longer nave and the choir was rectangular with massive walls . The second church was replaced in the mid-12th century by the third church , parts of which still stand today . The third church , a Romanesque building , had a round apse , a rectangular choir and a bell tower on the north side which were probably grafted on the earlier nave . The church was heavily damaged in the 1356 Basel earthquake . Three years later , under Konrad Münch-Löwenberg , the church was rebuilt . The rounded apse was replaced with the current rectangular choir and the nave was raised to a height of about below its current height . In 1420 Hans Thüring Münch-Eptingen became the owner of the village and had a new , larger bell tower built . Five years later , his mother gave the church a bell
1356 Basel earthquake
1356 Basel earthquake
Fortified Church of St. Arbogast