Its design followed the typical quadrangular shape of the Visconti castles with an internal courtyard surrounded by arcades and a tower for each corner.

The castle laid on the border between the Voghera city (to the north) and the countryside (to the south).

Two additional towers were built on the northern and southern sides, over the two entrances.

The restoration ended at the beginning of the 21st century, allowing the opening of the castle to the public.

In the east wing, fragments of frescoes attributed to Bartolomeo Suardi, a 15th-century painter, were revealed and restored.