This church is named after St. Cajetan, the patron saint of the unemployed and founder of the Theatine Order who were the trainers of priests. The building, which was built by the Italian Giovanni Zuccalli, dates from the late 17th century and has no tower but a huge cupola decorated with an 18th century fresco depicting St Cajetan being received into heaven. The interior contains a magnificent altarpiece as well as other fine 18th century paintings and white marble sculptures.