The territory of Agliana, with its unique quadrilateral shape bound by the course of the Bure, Calice, Ombrone and Brana streams, is characterized by the presence and vitality of the hamlets of Spedalino, San Piero, San Niccolò and San Michele, Agliana being nothing more than the toponym that defines the entire municipal structure.
The birth of Agliana followed the construction, in the 2nd century B.C., of the Via Cassia, along which, at the point where the route crossed the Agna Valley, a stopover station arose for pilgrims on their way to Rome and Lucca.
Because of its particular location, Agliana was also a strategic center for the Resistance in the Pistoia Apennines; the sacrifice of local partisans is remembered by a statue by Sergio Cammelli erected in Piazza della Resistenza.