Castellina is characterized by the Romanesque church dedicated to Ss. Philip and James. The church, initially dependent on the parish church of Saint Michael in Groppoli, was founded in 1159. It was a part of the castle of Castellina Molazzani and it was connected with an ancient fortress. The façade changed because of some works in the first XVII century; the medieval bell tower has a simple structure deriving from the 17th century restorations, while the southern side has a large semicircular 17th-century window. Inside a “Madonna with Child in Glory and the saints Lawrence, James, Michael archangel, John the Batpist, Philip and Antony abbot”, painted in 1628 by the Pistoian artist Alessio Gemignani, is near the choir.