Giacomo della Porta was an influential Italian architect and sculptor of the late Renaissance, born in 1533 and passing away in 1602. He is best known for his work on the St. Peter's Basilica in Vatican City, where he contributed to the design of the dome after the death of Michelangelo. His architectural style is characterized by its grandeur and harmony, reflecting the ideals of the Renaissance. In addition to St. Peter's, della Porta designed several other notable buildings, including the Church of the Gesù in Rome, which became a model for Baroque church architecture. His innovative use of light and space had a lasting impact on the development of Western architecture.