Chiesa di Sant'Andrea (Saint Andrew Church), Siena

Saint Andrew Church is a historical church with roots dating back to 1175 when it was first mentioned in connection with Blessed Alberto da Chiatina, who served as its rector. More definitive records from 1262 highlight its longstanding presence in the community.

Originally built in the Romanesque style, Saint Andrew's Church underwent significant transformations, particularly in the 18th century when the structure was raised and internally redesigned with new pillars, arches, and vaults. The façade was also enhanced with a two-flight entrance staircase. Further restorations in the 20th century sought to restore its medieval appearance, particularly the gabled façade, the bell tower, and the courtyard. A notable feature of the exterior is the apse, which preserves elements of the original Romanesque architecture.

The interior of the church features a single nave ending in an apse and houses several notable artworks. These include a mid-15th-century relief of the Madonna and Child, possibly by a student of Jacopo della Quercia, and a monochrome fresco by Martino di Bartolomeo from the same era depicting Saint Ann, the Madonna, and Child. Another fresco from the 15th century, attributed to the Sassettian school, is located on the left altar but has suffered deterioration over time. The main altar features a striking polyptych from 1445 by Giovanni di Paolo, depicting the Coronation of the Virgin between Saints Peter and Andrew.

Additionally, the church contains two 18th-century paintings by Apollonio Nasini, depicting scenes from the lives of the Blessed Aldobrandesca Ponzi and Blessed Alberto da Chiatina.