Behold the mysteries of the Great Pyramid revealed!

French architect Jean-Pierre Houdin (I wonder if he is related to the famous 19th century magician Robert Houdin, who later inspired the stage name for Harry Houdini?) claims to have solved the mystery of how the Great Pyramid of Cheops was built - he has a 3-D simulation available online (although you may need a plug-in to make it work and it takes ages to load), which will walk you through the theory or also allow you to 'free navigate' the 3-D reconstruction. There's even a little Second Life-style animated person (presumably a virtual Monsieur Houdin) who walks on to narrate the theory part. Fascinating stuff.