Archaeological excavations in 2010 and 2011 have discovered the original tower house likely dates earlier than 1600.
Another excavation discovered Alamanni graves to the north of the train station.
Under the current chapel from the 19th century, the 1988 excavations discovered a Galloroman temple.
In 1973, excavations at the site discovered evidence for some 40 neolithic houses.
The excavations also discovered two Khitan tombs from 1,000 years ago.
These excavations also discovered world's earliest recorded fish hook from a later time at 11,000 years old.
Between 1971 and 1976, excavations also discovered the remains of what is thought to have been a Byzantine era monastery near the sea.
A 2009 excavation discovered pottery dating to the 12th-14th centuries.
Archaeological excavations in the 1990s discovered a massive fortress, built around a thousand years ago.
An excavation in the 1960s discovered the original doorway to the chapter house.