The Collegiata di San Michele Arcangelo stands at the top of Via San Giuseppe, occupying a commanding position at the high point of Lucignano's elliptical street plan. The current building is largely Renaissance in style, though it incorporates earlier medieval fabric. The interior is cool, simple, and well worth entering — the wooden crucifix attributed to the Master of Lucignano is hung at the right of the nave and is one of the most arresting objects in the town.
The church faces onto the Piazza del Tribunale, the civic heart of the upper town, where the Palazzo Comunale stands opposite. The square is small — almost intimate — and the interplay between the civic and sacred buildings is characteristic of the Tuscan hill town at its best.