Chiesa di Santa Maria in Aquiro

First mentioned in 1192, the church of San Macuto has had several owners at different times. The monks of Bergamo, who owned the church in the 16th century, gave it a new facade around 1560. The facade was designed by the architect Giovanni Alberto Galvani and was partially rebuilt in 1577-1585 to a design by Francesco da Volterra.

The Baroque church of St. Ignatius stands on the square of the same name and was built by Cardinal Ludovisi in 1626 in honor of St. Ignatius Loyola, founder of the Society of Jesus. The church was built next to the Collegio Romano Palace and replaced the church of S. Maria Annunziata from the 16th century. The church houses the tomb of Pope Gregory XV.

The Basilica of Santa Maria ad Martyres, commonly known as the Pantheon, is an ancient Roman religious building built in the 1st century B.C. on the orders of Agrippa. Damaged by several fires, it was completely rebuilt under Hadrian (early 2nd century), and transformed into a church in the 7th century. The Pantheon is the largest ancient Roman monument that has survived in a virtually intact state. It has had an enormous influence on European architecture, both secular and sacred.