Only a few know that da Vinci had several sketches of the Vitruvian man. Here is one of them. But we have half of the picture only. Anyways, even this part may serve as a key to the place where one of Da Vinci's great-great-great-great-granddaughters will be waiting for you to share something important. All we know is that it could be nearby the place where the mechanisms that Leonardo was dreaming of and made sketches of are operating nowadays.
When you find the agent, you need to say the password "Da Vinci sent us here" and take a stand as the famous Vitruvian man. Good luck! "3"