Francesco Borromini was an Italian architect known for his innovative use of geometry and complex shapes. He began his career as a stonemason before moving to Rome in 1619. There he worked with Carlo Maderno and Gian Lorenzo Bernini, though later became rivals with Bernini. Some of Borromini's most notable works utilizing his signature curved designs include Sant'Agnese in Agone, Sant'Ivo alla Sapienza, and San Carlo alle Quattro Fontane. He also made alterations to existing buildings like the Palazzo Spada and interiors of churches such as San Giovanni in Laterano. Borromini employed manipulations of classical forms and symbolic geometries, influencing