Girolamo Rainaldi was an Italian architect who worked mainly in a conservative Mannerist style, often with collaborating architects. He was a successful competitor of Bernini. His son, Carlo Rainaldi, became an even more notable, more fully Baroque architect.

The Albertoni Spinola Palace, with entrances in Campitelli square n. 2, Capizucchi square and vicolo Capizucchi is located in the 10th District. It was projected and executed by Giacomo Della Porta and Girolamo Rainaldi around the end of 16th century and the first years of 17th century.