The Currier Museum of Art
Isabella Stewart Gardner Museum
The Museum of Fine Arts, Boston
Frick Collection
Metropolitan Museum of Art
National Gallery London
Vatican Museum
Yale University Art Gallery
Early Renaissance Art in Italy: 15th Century
High Renaissance and Mannerism in Italy: 16th Century
Medici Archive Project
Michelangelo : The Complete Works
Renaissance Europe — Metropolitan Museum of Art
Sistine Chapel Virtual Tour
Web Gallery of Art — European Painting and Sculpture of the Gothic, Renaissance and Baroque Periods