• Have a conversation with Leonardo -- the Leonardo bot
• Old version of the Worlds of Leonardo Course
• Bibliografia Internazionale Leonardiana A searchable bibliography of Leonardo studies (in Italian)
• The Art of Invention: Leonardo and Renaissance Engineers An exhibition organized at the Science Museum in London
• LEONARDO LIVES: A guide to Leonardo da Vinci and the Codex Leicester exhibit at the Seattle Art Museum
• The drawings of Leonardo da Vinci: An on-line image gallery
• Leonardo da Vinci: Scientist Inventor Artist: An exhibition at the Museum of Science, Boston
• Leonardo Da Vinci: A Man of Both Worlds
• Leonardo's Horse: A description of the recent reconstruction of Leonardo's equestrian monument to Francesco Sforza in Milan
• Leonardo's contributions to paleontology
• WebMuseum: Leonardo da Vinci: some bibliographical information and images
• The Controversial Replica of Leonardo da Vinci's Adding Machine: in fact, the machine is merely a gearing mechanism
• Biography of Leonardo from University of St. Andrews
• Leonardo's polyhedra
• The "Leonardo Virtuale" project
• The Sketches of a Renaissance Man - Leonardo da Vinci: archive of Leonardo's drawings arranged by subject
• Leonardo da Vinci on the Internet: list of links from the artcyclopedia
• The Codex Leicester: Masterpiece of Science: Exhibition at the American Museum of Natural History
• Biography of Leonardo, with an interactive timeline of his life by Martin Kausal
• Why is the Mona Lisa smiling?
• leonardo-da-vinci.org: web links and tacky merchandise
• Mona Lisa images for a modern world, or a Giocondophiliac's delight,  by Robert A. Baron
• A Leonardo bibliography
• How not to think like Leonardo da Vinci