Final answer:
Leonardo da Vinci's renowned masterpiece, The Last Supper, took 2 years to complete and showcases his expertise in perspective and human form. It depicts Jesus' final meal with his disciples.
Step-by-step explanation:
The masterpiece that took Leonardo da Vinci 2 years to complete is The Last Supper. Painted between 1495 and 1498, The Last Supper remains an iconic work of art. Located in the refectory of the Convent of Santa Maria della Grazie in Milan, this painting is celebrated for its intricate design and compelling portrayal of a pivotal moment in the Christian narrative, depicting the last meal Jesus shared with his disciples and the revelation of an impending betrayal. Da Vinci's experiment with tempera and oil on dry plaster, instead of traditional fresco techniques, led to the painting's early deterioration, making its preservation a challenge over the centuries. Despite this, The Last Supper showcases Da Vinci's mastery of the human form and his innovative use of perspective, particularly in the way the viewer's attention is drawn to Christ as the focal point, with all perspective lines converging on his right eye.