Pretty neat--Makes you wonder what is really on the building. Are any of the windows or archways actually present, or is it just a big brick wall?
I think it's a bit of a stretch for whomever put the video on that site to call it a "realistic 3D projection". Although it's extremely cool, it's clearly not 3D, any more than any TV show whose shadows give the impression of depth even though there's no actual 3D effects. The fact that it's done at night clearly enhances the perception of a 3D effect, without there actually being one.