A must see is the Aghinolfi castle, which has changed its structure during the course of the centuries due to various different construction work. It was built close to the sea to allow monitoring of the coast from La Spezia al Porto in Livorno and powers along the via Francigena below, and thus enjoys an exceptional strategic position. Inside the impressive eight-sided tower, thanks to the construction of a glass floor, the archaeological finds from the dig below are clearly visible as well as the phases of fortification work of the basement of an ancient tower, dating from between the eighth to the tenth century. The most interesting pieces found have been put in the museum. The surrounding stronghold walls have been restored and the archaeological park within is now open to the public.

On entering Pietrasanta, you'll see the Civic Hospital, the place formerly occupied by the convent of S. Savior. In the city center you can visit the Duomo (or Collegiate Church of St. Martin) that dates back to the first half of the fourteenth century; then visit the Church of S. Agostino, which is adjacent to the Augustinian monastery of SS. Annunziata, the Baptistery of S. Giacinto and the Church of S. Antonio Abate.

The town of Camaiore is located along the ancient route of Via Francigena is mentioned, and was first referred to with the name "Campmaior", a leg that was found along the journey of Sigeric on the Via Francigena. Sigeric probably lodged at the Benedictine Monastery of St. Peter that dates back from the eighth century and which is now part of the monumental complex of the Badia di Camaiore. The ancient Via Francigena passes through the historic center of Camaiore, offering a variety of lodgings. In particular, at the Church of San Michele, mentioned first in a document dated 1180, the pilgrims could find lodgings in the church's annexe, which today houses the Museum of Sacred Art. An archaeological survey of the area surrounding the church has revealed a large cemetery area from medieval times, in which pilgrims traveling along the Via Francigena were also found buried. The archival documents attest to the fact that foreigners who died at the hospital of San Michele were buried "in the church" and "at the church."