The village's parish church is a seventeenth-century baroque building dedicated to Saints Peter and Paul. It stands at the heart of Testico, its bell tower visible from the surrounding ridges. The interior repays a visit: a fine altarpiece dating from the same period as the church, and eighteenth-century frescoes covering the vault and the baptistery.
The church reflects the modest wealth and stubborn devotion of a small mountain comune whose people built well even when there were few of them. It is usually open during daylight hours, though as with many rural Ligurian churches you may need to ask in the village if you find it locked.