Count Pier Francesco Orsini (Google auto-translate) was a man much given to melancholy. The premature death of his wife, Giulia Farnese, and other troubles contributing to the decay of the once proud Orsini dynasty, darkened his outlook on life. Like the world-hating Jacques in Shakespeare's As You Like It, he seems to have come to regard the world around him with a somewhat self-advertising disgust. Orsini retreated noisily from the world of human affairs into nature, albeit a nature much improved by art (Google books preview). Those improvements came in the form of larger-than-life sculptures, some sculpted in the bedrock, which populated Sacro Bosco ("Sacred Grove"), colloquially called Parco dei Mostri ("Park of the Monsters"). [more inside]
"In creating a work that portrays real internal struggle and transformation, Caravaggio converted painting. [more inside]
Investigating Bellini's Feast of the Gods takes apart the layers of Feast of the Gods, painted by Giovanni Bellini, repainted by Dosso Dossi, and repainted again by Tiziano Vecellio--that is, Titian. Visitors can see the results of x-rays and other imaging techniques, view the painting's changing context in the Duke of Ferrara's gallery, and examine details in close-up. [more inside]
The Rijksmuseum in Amsterdam invites you to compare Caravaggio and Rembrandt. For an overview of Rembrandt's work here are Rembrandt van Rijn: Life and Work and A Web Catalogue of Rembrandt Paintings. For Caravaggio there's caravaggio.com which makes use of the Italian website Tutta l'opera del Caravaggio.
I know who brought Leonardo's greatest drawings to Britain. I may not be a Harvard professor of religious symbology or know much about the bloodline of the Magdalene, but I do enjoy a mystery and so I set out to solve this one. And I succeeded. Final proof is elusive, always, but in this case the circumstantial evidence is so overwhelming, I think I've got my man."