Rijksmuseum Amsterdam - I did a paper on Rembrandt back in 1996. Despite the fact I'm Italian; Rembrandt is one of my favorite renaissance artists. If you look at Rembrandt's works compared to others of the period you'll see how accurately he painted the lighting conditions. Lighting and shadows is one of if not the most difficult things for an artists to master.

You can impress your partner with your extensive knowledge of him - just hit wikipedia.