The patron saints of Pietrasanta are Saint Martin and Saint Blaise, celebrated on 3 February.
The seaside hamlet of Marina di Pietrasanta is known for its great pine forest, where the Versiliana Festival is held every summer, drawing numerous nationally famous singers and comedians. The hamlet of Valdicastello is home to the house-museum dedicated to the poet Giosuè Carducci. The town also holds the Duomo, the Museo dei Bozzetti and the Rocca di Sala.