The patroness of Torriglia is Our Lady of Divine Providence, celebrated on the last Sunday of August.
The castle overlooking the town belonged to the Malaspina family in 1180, then to the Fieschi from the 13th century, who built it to defend the town after being invested with it around the mid-13th century; in 1432 it was attacked and captured by Genoa amid the Guelph-Ghibelline struggle. After the Fieschi conspiracy of 1547 it passed to the Doria family, who radically altered its structure and held it until 1799, when it was attacked and destroyed by the inhabitants of Torriglia themselves; only since 2009 has it again been accessible and open to the public. The town's coat of arms recalls this history: the black eagle in the upper field is the symbol of the Doria family, while the three crenellated Guelph towers below represent the remains of the ancient stronghold.
The parish church of Sant'Onorato, in the main village, belongs to the diocese of Tortona and is the only one in Liguria to bear this dedication: rebuilt in the 17th century, it holds inside marble statues of various saints.
