The harmonious façade with stucco decorations, that has been recently restored, is enriched by two small lateral bell towers, with a cymatium surmounted by the statues of St. John Baptist, St. Peter and St. Paul.

The church inside is set on a typical basilica plan with three naves that are divided by white Carrara marble double columns, following the model of the church of San Siro in Genoa.

The majestic main altar was made by the finalese sculptor Pietro Ripa in 1701 with a central tabernacle with spiral columns and signing angels that support the large crucifix.

Starting from the 17^th century the church was enriched with prestigious marble polychrome altars, placed in the lateral chapels, patronised by the main families of Finalmarina and the numerous local confraternities.

In the chapel of the Immaculate Conception, in the left transept, there is an image of the Madonna, subject of a particular veneration with being the patron saint of the town: it’s a statue dressed with rich Spanish style robes, dated to 1681.

In the left aisle, the chapel of San Pietro, once belonging to the “Religious brotherhood for the redemption of slaves” established in 1648, houses the wooden group with the “Apparition of the Christ to Saint Peter” performed by Antonio Brilla in 1860, particularly revered by the fishermen of Finale.

In 1830 the painter Giuseppe Passano painted the frescos in the vault of the central nave with “Scenes of the life of St. John Baptist” and figures of prophets and sibyls in the lunettes. The decoration of the cupola was carried out by the Milanese painters Felice and Giovanni Bella with figures of the “Doctors of the Church” in the lunettes.