 Other academics argue that, given the historical documentation, Leonardo would have painted the work from 1513.According to Vasari, "after he had lingered over it four years, [he] left it unfinished".In 1516, Leonardo was invited by King Francis I to work at the Clos Lucé near the Château d'Amboise; it is believed that he took the "Mona Lisa" with him and continued to work on it after he moved to France.