Cathedral of Castiglione delle Stiviere, Cathedral in Castiglione delle Stiviere, Italy.

The cathedral of Castiglione delle Stiviere, dedicated to Saints Nazario and Celso, was built from 1761 to a design by Giovanni Battista Groppi on a hill above the town, over a 16th-century church. It has a Latin-cross plan with three naves. In the right chapel hangs Pietro Novelli's Santa Rosalia among the plague-stricken (c. 1630); in the left, Camillo Procaccini's Marriage of Saint Catherine (c. 1600); the main altarpiece of the two patron saints is attributed to Luigi Sigurtà (1777).

The present church was built in 1761 in Neoclassical style on a hill over the ruins of a 16th-century church, using material from the demolition of Castiglione castle. In that earlier church Luigi Gonzaga was baptized on 20 April 1568 and received his first communion from Cardinal Carlo Borromeo in 1580. On 24 June 1859, during the Battle of Solferino and San Martino, the church served as a hospital for the wounded, where Henry Dunant gave aid.

The cathedral is dedicated to Saints Nazario and Celso, and its high altarpiece depicting them is attributed to the local painter Luigi Sigurtà (1777). Beside the church stands the small Chiesa dei Disciplini, founded in the first half of the 16th century by Aloisio Gonzaga, grandfather of Saint Luigi, who preached there on the Eucharist on 3 March 1590.

The cathedral stands on Piazza Duomo on a hill above the town, so the approach is uphill. The small Church of the Disciplini, founded by Aloisio Gonzaga in the first half of the 16th century, stands beside it. Inside, the pipe organ built by Natale Balbiani in 1925 is to the right of the presbytery, with two 58-note keyboards and a 30-note concave pedalboard.

Beside the cathedral stands the small Chiesa dei Disciplini, founded in the first half of the 16th century by Aloisio Gonzaga, grandfather of Saint Luigi. On 3 March 1590 Luigi Gonzaga preached there on the Eucharist. In front of the main altar lies the tomb slab of Marta Tana, his mother.