Santi Siro e Materno, Minor basilica and national heritage in Desio, Italy.

Santi Siro e Materno is a minor basilica and nationally protected building in Desio near Milan. The interior features a central nave with side chapels, a barrel vault, and a dome at the crossing of the transept, while the facade displays a main entrance flanked by columns and topped with a decorated upper section.

The first church on the site dates to the 7th century, founded by Milan's archbishop John the Good. The present building replaced it from 1652, designed by Camillo Ciniselli and built by Pietro Pozzi and Carlo Giuseppe Merlo, and was consecrated in 1744 by Archbishop Giuseppe Pozzobonelli. A transept and dome were added in the 19th century for the growing population, and the church was reconsecrated on 24 August 1895 by Cardinal Andrea Carlo Ferrari.

The church follows the Ambrosian Rite within the Archdiocese of Milan and preserves the liturgical traditions of this region. Visitors can observe these special services and experience a local religious heritage that differs from other Italian churches.

The basilica sits on Piazza Conciliazione and is easily reached from Desio town center. Visitors should check service times in advance if planning to attend a religious ceremony or simply to ensure the building is open for viewing.

The bell tower holds a set of bells cast in 1843 and maintained by a bell-ringing group that has been active since 1799. This long tradition of bell care makes the place special for those interested in religious music and traditional craftsmanship.