The church of San Nicolò is located in San Piero, in the Belvedere square or in Factoja.
The church, originally dedicated to Saints Peter and Paul, would have been built in the seventh century on the remains of a Roman temple, dedicated to the god Glaucus (god of the sea protector of sailors).
It is believed that the church was born with five bays and the first two were lost, a space now occupied by an atrium-courtyard.
Rebuilt in the 12th-13th century, it has the granite row cladding typical of the Elban Romanesque, but it is unique for its plan with two naves, separated by three arches set on columns and concluded with two apses, both equipped with an altar; probably for the original header to the two saints Peter and Paul.
Within its particular structure, we find some 15th century frescoes.
The church in the fifteenth century was incorporated between the two bastions of a fortress.
