2 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.)