3 Best Sights in Colle di Val d'Elsa, Tuscany

Visit this 15th-century church to view the excellent stained-glass window in the apse, executed by Sebastiano Mainardi (circa 1460–1513), as well as a haunting Pietà created by local artist Zacchia Zacchi (1473–1544).

Several reconstructions have left little to admire of the once-Romanesque Duomo. Inside is the Cappella del Santo Chiodo (Chapel of the Holy Nail), built in the 15th century to hold a nail allegedly from the cross upon which Christ was crucified. (Perhaps it inspired the locals to go into the nail-making business, which became another of the town's flourishing industries.)

The museum of sacred art displays religious relics as well as triptychs from the Sienese and Florentine schools dating from the 14th and 15th centuries. It also contains the town's tribute to Arnolfo di Cambio, with photos of the buildings he designed for other towns. Down Via del Castello, at No. 63, is the house-tower where Arnolfo was born in 1245. (It's not open to the public.)