Francesco Borromini was a leading figure in the emergence of Roman Baroque architecture. A rival of Gian Lorenzo Bernini, his work was characterized by its inventive use of classical forms, dramatic manipulations of space, and a focus on geometric complexity. His major works in Rome, including the churches of San Carlo alle Quattro Fontane and Sant'Ivo alla Sapienza, showcase his unique approach to undulating walls and intricate dome structures. Despite his genius, Borromini's melancholic temperament and difficult personality led to a life of professional frustration, culminating in his suicide in 1667.