Chiesa dei Santi Celso e Giuliano

The Basilica of San Giovanni Battista dei Fiorentini was begun in the 16th century and completed in the 18th century. The architect Jacopo Sansovino, started the construction in 1519, the actual construction of the church was carried out with the participation of Giacomo Della Porta who set up a church with a basilica plan with three naves on arched pillars and five chapels on each side. It was only thanks to Carlo Maderno that Giacomo Della Porta's project was realised, reducing the apse and transepts to three flat walls with large windows and building the slender dome in brick and stucco in 1634. The church was not completed until 1738 by Alessandro Galilei, who died a year before the completion of the façade.

Santa Maria in Vallicella, traditionally called Chiesa Nuova, has existed since the 13th century. When the old church was assigned to the new congregation of the Oratory in 1575, it was in a state of ruin and the congregation decided to rebuild it. The work is finished at the beginning of the 17th century with the façade but the dome is modified in 1650 by Pietro da Cortona and a bell tower is added in 1666 by Camillo Arcucci.

The church of Santa Lucia del Gonfalone is the reconstruction, from 1511, of an ancient medieval church. The new building was entrusted to the Arciconfraternita del Gonfalone and underwent successive restorations in 1603, in 1764 by Marco David and in 1866. It was on this last occasion that Francesco Azzurri decorated the interior.