The church of Sant’Agostino, with its adjoining convent, is a sacred building located in Pietrasanta.
Built in the fourteenth century, it was annexed to the convent and the Hospital dei Mercanti. The façade recalls architectural and plastic decoration of the San Martino di Lucca. In the first phase there are numerous tombstones on the floor and pieces of fresco cycles from the 14th to 15th centuries. In the wall of the main altar, in the counter-façade and in the right wall the eighteenth-century wall decoration was recovered.
The altars erected between the fourteenth and sixteenth centuries have been replaced with the existing ones in marble, seventeenth century, with the exception of the first on the right, of 1512: on it was placed a Nativity (1519) by Zacchia il Vecchio, stolen in 1921, which remains the crowning bezel with the Pietà.
Today the building is suspended from worship and is used for temporary exhibitions, especially in the summer months.