http://www.drawingsofleonardo.org/ is a rich and highly specialized digital repository dedicated to showcasing a vast collection of sketches by the Renaissance master Leonardo da Vinci.
This website brings together da Vinci's manuscripts and drawings across various fields such as art, science, engineering, anatomy, and natural observation, providing users with a high-definition, easy-to-navigate platform. Users can explore and appreciate his diverse sketches and notes, ranging from studies of the human body and designs for military machinery to studies of facial expressions.
It is an invaluable online resource for art historians, students, and anyone interested in da Vinci's extraordinary ideas and creative process.