The correct answer is all of the above.
When in Milan, Da Vinci created paintings, sketches, drawings, theater designs, and prototypes for the Milan Cathedral dome.
From 1482 to 1499, Leonardo Da Vinci spent most of its time in Milan, Italy. There, he worked on extraordinary pieces of art such as “The Last Supper”, representing the Bible’s reference to Jesus and his apostles in the last supper, one night before Judas delivered Jesus to the Romans. He also worked in the painting “Virgin of the Rocks” and many other works inside the Milan Cathedral.