This [very slow loading, but persevere, it's worth it] website "probably" contains the biggest digital image in the world. Some details are here.
posted by tellurian on Oct 23, 2006 - 56 comments

"Researchers have discovered the hidden laboratory used by Leonardo da Vinci for studies of flight and other pioneering scientific work in previously sealed rooms at a monastery next to the Basilica of the Santissima Annunziata, in the heart of Florence."
posted by ScottUltra on Jan 13, 2005 - 28 comments

Ancient Roman erotica to be unveiled, "once thought too scandalous for mere mortals to view."
posted by veruca on Apr 2, 2000 - 6 comments