San Carlo al Corso, Minor basilica in Campo Marzio, Rome, Italy
San Carlo al Corso is a Baroque church in Campo Marzio featuring a Latin cross plan with three naves and a deambulatory around the presbytery. The dome, among Rome's largest, creates a striking interior that dominates the space.
Construction began in 1612 under architect Onorio Longhi, replacing a 10th-century building. Work continued for eight decades, slowed by financial difficulties that challenged the project.
It serves as the national church for Lombard residents in Rome, with the cardinal title traditionally held by Milan's archbishop. Visitors notice the strong connection to northern Italian identity reflected in the decoration and congregation.
Entry is generally free and the church is accessible during daytime hours, with regular services held throughout the week. Visitors should dress appropriately and be respectful of the active congregation.
Behind the main altar sits a gilded reliquary holding the heart of Saint Charles Borromeo, sent to Rome in 1613. This sacred object remains a rare treasure deeply connected to the church's ties with Milan.
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