If your cruise ship stops in La Spezia, make a day out of visiting Pietrasanta, Carrara, and Colli di Luni. First see the Bozzetti Sculpture Museum, and then stop for coffee (own expense) in Piazza del Duomo. Make your way to the Tuscan city of Carrara, and pop into the ancient village of Colonnata. You can choose to take a guided tour inside a working quarry in the Apuan Alps, or go on a 4x4 tour travelling through a network of 30 open-air active quarries (also own expense). End your tour wine tasting (own expense) in Colli di Luni before returning to La Spezia.