Baroque architecture emerged in late 16th-century Italy, characterized by emotional intensity and ornate embellishments, reflecting the triumph of the Catholic Church amidst the Protestant Reformation. Key figures include Carlo Maderno, Gian Lorenzo Bernini, and Francesco Borromini, with notable works like St. Peter's Basilica and the Palace of Versailles illustrating the style's opulence and influence across Europe. The transition from Italian to French Baroque led to a more restrained approach, which significantly shaped architectural trends in the 18th century.