Final answer:
Michelangelo was a master artist and architect, known primarily for his work on St. Peter's Basilica where he designed the dome. Other structures such as the Sistine Chapel and the Statue of David exemplify his talents in painting and sculpture, with the Laurentian Library also displaying his architectural skills.
Step-by-step explanation:
Michelangelo, a multifaceted genius of the High Renaissance, contributed significantly to various fields of art. Renowned primarily for his sculptures and paintings, he also left an indelible mark as an architect. Among the structures that showcase his architectural prowess, the most significant is undoubtedly St. Peter's Basilica. Michelangelo's major architectural works include the design of the dome of St. Peter's Basilica in Vatican City. His design reflected a symmetrical plan with an ever-changing surface of wall angles and a ripple effect in the cornice. While the Sistine Chapel and the Statue of David are not architectural works, they are testament to his skills as a painter and sculptor, respectively. The Florence Cathedral and the Laurentian Library also bear his touch; the former indirectly as he sculpted the David initially intended for the cathedral and the latter showcasing his architectural involvement.