Chiesa di Santa Caterina dei Funari

Sant'Ambrogio della Massima is said to have been built on the site of St. Ambrose's paternal home, where he lived (in the 4th century) until he moved to Milan as a consul. The church was rebuilt several times, but the sources do not specify the dates. In the 15th century or around 1500, it would have been joined to the adjacent church of Santo Stefano and rededicated to Saint Ambrose. Between 1606 and 1634, commissioned by the brothers Beatrice and Ludovico de Torres, one a Benedictine and the other a cardinal, it was rebuilt by Orazio Torriani and Carlo Maderno, incorporating the remains of the previous building. After 1870, the church and the monastery were expropriated by the Italian State, but later the church and part of the convent were returned to the Benedictines.

Santa Maria in Portico was built between 1659 and 1667 after an icon of the Virgin Mary, carried in procession through the streets, was credited with saving the town from the plague of 1656. The 25 cm high icon of the Virgin Mary is dated by style and dendrochronology to the 11th century. It used to be in the old oratory of Santa Gala, now demolished.

The church of Santo Stanislao dei Polacchi, built in 1582, is the national church of the Poles living in Rome. The present church was built on a medieval church mentioned in documents from 1174 and 1209. Pope Gregory XIII granted the church to the Polish Cardinal Stanislaus Osio who, in the 1580s, had the church completely rebuilt and dedicated it to the patron saint of Poland, St Stanislaus Szczepanowski.