The Battle of Anghiari (Leonardo da Vinci)
In 1504 Leonardo da Vinci was given the commission by gonfaloniere Piero Soderini, a contract signed by Niccolò Machiavelli, to decorate the Hall of Five Hundred. At the same time his rival Michelangelo, who had just finished his "David", was designated the opposite wall. This was the only time that Leonardo da Vinci and Michelangelo worked together on the same project. The painting of Michelangelo depicted an episode from the Battle of Cascina, when a group of bathing soldiers was surprised by the enemy. However Michelangelo did not stay in Florence long enough to complete the project. He was able to finish his cartoon, but only began the painting. He was invited back to Rome in 1505 by the newly appointed Pope Julius II and was commissioned to build the Pope's tomb.
Apollo (Michelangelo)
When Cosimo came into possession of the collection containing the most important statues of Michelangelo (the Bacchus or the Genius of Victory), the "Apollo-David" was placed in the Boboli Gardens, where it decorated a long niche of its amphitheater. In 1824 the statue was transported to the Uffizi, and later placed into the collection at the Bargello. Now it is in the National Gallery of Art Museum, part of the Renaissance wing complete with European paintings and sculptures.