Cabecera: Diversos retratosde Leonardo da Vinci: San Juan Bautista, la Gioconda, la Dama del Armiño y La Belle Ferronière

Fuente dels vídeos:
http://www.youtube.com/watch?v=lhhhPe0YiEg
http://www.youtube.com/watch?v=Q9p-tA68sos&feature=related
http://www.youtube.com/watch?v=ZeCgbcmomMA&feature=related
http://www.youtube.com/watch?v=SLVjCzOP_a4&feature=related
http://www.youtube.com/watch?v=b0aur5Sh7mA&feature=related
http://www.youtube.com/watch?v=U2ySFVQW44A&feature=related
http://www.youtube.com/watch?v=7GypXvM_GFY&feature=related