Collegiata di San Michele Arcangelo, Lucignano

This collegiate church was designed by Orazio Porta, and built at the site of an ancient castle destroyed during the Florentine-Sienese conflict of 1556.

The scenographic, baroque, travertine marble stairs, with convex followed by concave levels were designed in 1712 by the Jesuit architect and painter Andrea Pozzo.

The interior houses main altar dedicated to Saints Peter and Paul by Andrea Pozzo.

It holds two altarpieces: a Visitation (1631) by Matteo Rosselli and a Glory of St Joseph (1668-1670) by Onorio Marinari.

The Chapel of the Holy Sacrament has a putatively miraculous 14th-century crucifix, once found in the church of Santa Margherita.