Montemarciano is located on the Setteponti road, the ancient Etruscan-Roman Cassia Vetus road.
In the parish church dedicated to Santa Lucia and San Apollinare, the architrave of the thirteenth-century church is walled up in the entrance. Of particular interest 400 meters from the town of Montemarciano on the Setteponti road is the oratory of the Madonna delle Grazie built in 1522, surrounded by a portico with cross vaults. At the entrance door there is a frescoed lunette with a Madonna and child from the early seventeenth century; inside there are two seventeenth-century altars and a fresco of the fifteenth century believed to be a youthful work by Masaccio: The Madonna Enthroned between San Michele and San Giovanni Battista (from the site of the Municipality of Terranuova Bracciolini).
It was the site of two ancient hospitals for pilgrims, dedicated to Sant'Angelo and San Martino. Initially under the lordship of the Pazzi family, the castle was occupied by the Florentine troops in 1288 and from 1313 it came under the definitive control of Florence. The community of Montemarciano was also included in the so-called "third of Loro" within the Podesta office of Terranuova and had its own municipal council, complete with a rector to be appointed every six months. Regulated by the statutes of the municipality was also the feast of May 8 in honor of San Michelagnolo; the feast that is still celebrated today was then dedicated to the Madonna delle Grazie. Of the ancient fortified wall remains Porta Campana, traces of the walls and the Etruscan arch through which a paved road led to the castle of the "Cave", the current road grafted onto the one that crosses the town along its length, was instead built in 1918 starting from the point where there was an ancient tabernacle with paintings, on the sides of Christ on the cross, of San Rocco and San Sebastiano.