The document provides information about Baroque architecture. It began in the late 16th century in Italy as a new theatrical style that used Roman vocabulary from the Renaissance. Baroque architecture was characterized by new explorations of form, light, shadow, and dramatic intensity. Instead of straight classical lines, Baroque featured curved and broken lines, more elaborate decoration, and complex shapes. Two influential Baroque architects were Bernini and Borromini, who worked primarily in Rome on churches like St. Peter's and Sant'Andrea al Quirinale.