The Surgical Planning Laboratory (SPL) of the Department of Radiology at Brigham and Women's Hospital and Harvard Medical School has made a virtual treasure chest of visual anatomical information available at its web site. Highlights of the site include the Brain Atlas datasets: complex java applets that allow users to see parts of a schematic brain and heart. Users can rotate the images, and either click on parts of the images or on a listing of anatomical names and have those parts of the images labelled.