Dedicated to St. Appian, considered one of Tuscany's earliest evangelizers, the parish has ancient origins, dating back to the 10th century, although some parts may be even older as evidenced by some of the protoromanesque elements found inside. The church represents one of the most important examples of Romanesque parish churches in the area, with its massive and solemn stone structure exuding a sense of strength and solidity.
The interior of the Pieve di Sant'Appiano is sober but striking; the nave is divided from the side aisles by five arches; the left aisle houses the relics of St. Appian.
The decorations and frescoes, though not numerous, tell of the long history of devotion that has characterized this sacred place. Among the most fascinating elements are the remains of the baptistery that stand out in the garden in front of the pieve, one of the few remaining examples in Tuscany of a baptistery separate from the church. Now in ruins, it still preserves the foundations of a structure that was once crucial to the religious life of the local community and enriches the atmosphere with great charm.
In the church complex there is a small Antiquarium which holds a great treasure: the many archaeological relics found in the surrounding area, including many Etruscan urns and a pagan idol dating from the 2nd century AD, and numerous paintings including the triptych depicting the Madonna and Child and Saints John the Baptist and Jerome della Marca, made by Maestro da Signa, an anonymous painter of the 15th century.
