Four times a year, the Midwest Faculty Seminar hosts a conference at the University of Chicago. The topics have ranged from Bollywood to John Rawls to Hurricane Katrina. Starting with my complete redesign of the site last year, I have created custom graphics (particularly a 500x600 splashscreen for the homepage) for each institute.
For the latest MFS conference, Mind, Brain & World: Embodied Cognitions, I made use of this amazing public domain collection of anatomical atlases from the National Institute of Health. The image above comes from the 1627 atlas De humani corporis fabrica libri decem (original image here).
The conference page header features a closeup of the underside of the brain.