The church was originally constructed in the 12th century on the site where the city's first bishop, Saint Siro, allegedly preached.
It served as the principal center of Sanremo's religious and civic life for centuries, including acting as a meeting place for the local parliament.
The campanile (bell tower) was reconstructed in the early 20th century after the original suffered structural damage over time.
A famous 17th-century crucifix by Anton Maria Maragliano is preserved within the church.
The church was elevated to the status of a co-cathedral in 1975.
The Concattedrale di San Siro is the oldest church in Sanremo, dating its origins to the 12th century. Built on the site of a previous oratory, the structure displays a Romanesque-Gothic transition style following extensive renovations. The facade features a distinct rose window and a portal decorated with medieval stone carvings. Its interior holds a significant collection of 17th-century paintings and wooden statuary. The cathedral serves as a co-cathedral of the Diocese of Ventimiglia-San Remo. A marble relief of the Madonna and Child is set into the exterior wall, representing local devotional history. The building underwent modifications in the 17th century to incorporate Baroque elements into its medieval framework.
The main portal area and the rose window from the small square in front of the church.
Walk the surrounding narrow alleys of La Pigna, the medieval district, before or after your visit.
Check the exterior walls for the medieval bas-reliefs often overlooked by casual passersby.
Maintain a quiet demeanor as the church remains an active site for local worship.
Do not attempt to drive into the immediate vicinity, as the surrounding streets of La Pigna are narrow pedestrian-only zones.
Closed to visitors during scheduled religious masses and liturgical functions.
Modest dress is required: shoulders and knees must be covered. Refrain from using flash photography during services.
