A small, perfectly preserved twelfth-century Romanesque parish church a kilometre west of Pienza, down a quiet country lane lined with cypresses. The interior is plain pale stone with a few worn Romanesque capitals — sirens, lions, an Adoration of the Magi — and a small font in the corner.
Worth the fifteen-minute walk from the town centre, both for the building itself and for the half-mile of strada bianca through olive groves that gets you there. The church is occasionally closed; the surrounding hillside and the views back toward Pienza are open at any hour.