San Quirico d'Orcia is a small medieval hill town, so the things to do are correspondingly human-scaled: walk the walls, visit the Collegiata, sit in the garden, and drive into the surrounding landscape. The Val d'Orcia — a UNESCO World Heritage Site — provides the backdrop.
The town's main attractions are the Romanesque collegiate church, the Horti Leonini garden, and the medieval Palazzo Chigi. For most visitors, San Quirico is a base for exploring the wider Val d'Orcia rather than a destination on its own — Bagno Vignoni, Pienza, and Montalcino are all short drives away.