Castello di Padernello, Medieval castle in Borgo San Giacomo, Italy.

Castello di Padernello is a fortified noble residence in Borgo San Giacomo, in Lombardy, with a working portcullis and a drawbridge over a water-filled moat. The structure consists of a rectangular main building flanked by four corner towers, entirely surrounded by water.

Built as a defensive tower in the late 14th century, the structure was gradually transformed into a noble residence by the Martinengo family. After their occupation ended in 1834, the building changed hands several times and fell into disrepair before being restored in the 21st century.

The Martinengo family coat of arms, a red eagle on a gold background, appears in the decorated rooms and recalls the nobles who lived here for centuries. The halls give visitors a sense of how daily life unfolded for a powerful Lombard family.

The interior is open only through guided tours, which must be booked in advance through the Castello di Padernello Foundation. Spots fill up quickly, so it is worth checking availability early, especially on weekends.

The castle's moat is crossed by a working drawbridge with a rivellino, the outwork that guards the approach; the complex has 100 rooms over 4,000 m². The Martinengo eagle, symbol of the family, appears on the capitals of the north portico, built around 1470.