Church of Sant'Onofrio al Gianicolo

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.

The church of Santo Spirito in Sassia was founded in the 8th century. Seriously damaged during the sack of Rome (1527), the church was rebuilt between 1538 and 1545, but the façade dates back to 1590, while the decoration of the apse was carried out from 1593 by Jacopo Zucchi. A new high altar was inaugurated in 1668 by Francesco Maria Febei.

The church of San Lorenzo in Piscibus was probably founded as early as the 6th century, but the first verifiable mention of the church dates back to the end of the 12th century. In 1663, the entire complex was entrusted to the Piarists who, in 1672, had the church radically restored in Baroque style under the direction of Francesco Massari. In 1731 the convent was demolished and rebuilt in 1773 according to the design of Giovanni Domenico Navone, who also designed a new façade for the church. When the Via della Conciliazione was built, the church was not demolished (only the baroque façade and the atrium were demolished) and was integrated into the modern buildings on the left side of Piazza Pio XII.