The Romanesque façade, dating to the early 12th-century shows some of the typical features of the Pisane medieval architecture, such as the blind arcades, the lozenges and the use of bichrome stones (present also in the city's cathedral).
The early 12th-century façade displays some common traits of Pisane medieval construction, like arcaded walkways, geometric patterns, and the use of contrasting stone colors, also seen in the local cathedral.