Monuments in the Basilica of Santa Maria del Popolo
This elaborate Baroque monument set against the third pillar of the south aisle has several peculiarities. It is crowned by the coat-of-arms of Pope Nicholas IV (Girolamo Masci) but this medieval pope was buried in the Basilica of Santa Maria Maggiore. The monument in Santa Maria del Popolo was built for his late descendant, Count Masci-Ferracuti from Ascoli Piceno who was appointed to the Bishop of Vieste by Pope Sixtus V in 1589. He died in Rome in 1613 at the age of 60 years. He was buried with solemn pomp in a marble tomb in the basilica. The tomb was built by her niece, Anastasia Mascia and her husband, Marzio Elefantucci, a nobleman from Bologna. Under the pretense of honouring their uncle they built a monument for the most illustrious member of their family, Pope Nicholas IV whose name is mentioned twice in the funerary inscription.
San Giacomo in Augusta
A church at the location was founded along with a hospital by Cardinal Giovanni Colonna in 1339. By 1515, the hospital was in a state of abandon, but within a few decades reopened under the supervision of two religious orders, with the aim of curing those affected by syphilis. Pope Nicholas V placed it under the control of the Company of Santa Maria del Popolo. This order was under the patronage of the Florentine Cardinal Antonio Maria Salviati, and he commissioned the reconstruction of the church. The oval layout of the church at the site was rebuilt starting by Francesco da Volterra in 1592. Upon the former architect's death, the facade and most of the interior decoration completed by Carlo Maderno in 1600.