The Council on Tall Buildings and Urban Habitats just formally released its revised criteria for “Tallest Buildings.”  As you can see from their press release, it’s a bit of a mess, but takes into account the shenanigans that architects, owners, and engineers have gone through to be “#1.”  Most interesting is that they’ve given up on the idea of measuring to the “roof,” which makes sense given the shapey cones, towers, etc., that are sprouting up on top of skyscrapers in a bid for extra height.  And, thanks to Chicago’s Trump Tower, they’ve redefined the point from which height is measured.  No longer is it street level, it’s from the “lowest significant, open-air pedestrian entrance.”  Expect something in Dubai to bring people in from an underground parking garage through a deep open pit pretty soon.