Castello di Serralunga, Medieval castle and national museum in Serralunga d'Alba, Italy.

Castello di Serralunga is a fortress sitting on a hilltop in a small Piedmont village, combining French donjon architecture with steep stone walls. The tower contains three large halls stacked vertically on top of each other, offering views over the surrounding valley.

The Falletti family built this structure between 1340 and 1357, turning a simple defensive tower into a sophisticated military stronghold. The thick stone walls and tall design reflect the feudal struggles between competing powers in the region during that time.

The castle's only frescoes are in the Salone dei Valvassori, painted in the 15th century and showing the martyrdom of Catherine of Alexandria. The Falletti never lived here; the building was held by soldiers, so the rooms have no furnishings. Since 2007 it belongs to the Castelli Doc network with Grinzane Cavour, Barolo, Govone, Magliano Alfieri, Roddi, Mango and Benevello.

The castle is reached on foot through the village of Serralunga d'Alba; the tower's circular stair is narrow and steep. Since 2007 it has been part of the Castelli Doc network of eight castles, which also includes Grinzane Cavour, Barolo, Govone, Magliano Alfieri, Roddi, Mango and Benevello, and it is listed in the Castelli Aperti circuit of Basso Piemonte.

The castle has no furniture because the Falletti never lived there; it housed only soldiers. In the circular tower, a passage leads to the "pozzo dell'oblio" or "pozzo rasoio", where condemned prisoners were thrown. The 15th-century frescoes of the martyrdom of Catherine of Alexandria in the Salone dei Valvassori are the only paintings in the castle.