The round tower no longer exists, but its location is marked with a cross on the floor of the current restaurant terrace.

[4] In 1470 Bümpliz village and the castle became part of the lands of the powerful Bernese patrician Erlach family.

The Abortturm, which no longer exists, contained bathrooms for the first and second floors as well as stairs into the roof over the gatehouse.

In 1742, Daniel Tschiffely hired Albrecht Stürler to replace the old building with the Neues Schloss Bümpliz.

The north-east wing was rebuilt into a barn and the courtyard was converted into a vegetable garden and chicken coops.

[6] In 1839 Johann Friedrich Albrecht Tribolet bought the Old and New Castles from Carl von Tavel.

In 1849 the buildings were acquired by Jakob Allemann who converted it into a boys' boarding school, which was known as the Löffelschlyffi.

She sold the New Castle but converted the Old into a rental property with three small apartments on the ground floor and two larger ones in the upper story.

They rebuilt the interior rooms and during the Great Depression used the castle to provide good, cheap food, a lounge and a library to the many jobless in the area.

An archeological dig in 1966 found such a wealth of artifacts, that in 1970 a team of twelve workers led by Werner Meyer, a professor at the University of Basel, spent ten weeks exploring the castle grounds and discovering the history of the castle.

The rest of the building was converted into the Bümpliz village archives and into meeting rooms or offices.