Michelangelo di Lodovico Buonarroti Simoni and Leonardo da Vinci brought forth an unparalleled shift in the development of Western art. They are two artists who irrefutably produced two Renaissance wonders: Michelangelo's David and Leonardo da Vinci's Mona Lisa. Centuries later, they remain as the two most renowned artistic creations in the world. Seeming to be as though reflected opposites of one another – the woman who sits smiling and the man who stands grimacing. Said to be no coincidence, as they were created around the same time (between 1501-1506), in the same city of Florence, by artists who were each other's direct rivals. Michelangelo Famous work: David Over time, it became the artist's habit to leave behind on his work marks of the chisel; straining actions that were fossilized in the chipped, unpolished surface of the marble; while his other works boast smooth, lifelike limbs or anguished faces envisioned from pillars of stone.