The patron saints of Baschi are Saint Longinus and Saint Nicholas, celebrated on 6 December. The parish church of San Nicolò, built in the second half of the 16th century, holds inside a polyptych by Giovanni di Paolo, a 15th-century Sienese painter.
The municipal territory also holds the archaeological area of Scoppieto, while in the town the municipal antiquarium gathers finds documenting its history. Among the town's other religious buildings are the church of San Donato and the church of the Madonna di San Sebastiano.
