The round footprint was derived from the name “World” Trade “Center”.  Blue glass represent the oceans and the rooftop gardens represent the land.  A stairway laces up through the rooftop atriums with an individual step for each of the victims.  Fund raising events can be held like the CN Tower Stair Climb where an average person reaches the top of the 1776 steps in about 30 minutes.  The Memorial program forbids commercial structures, so the office space is exclusively leased to  humanitarian organizations to carry on the altruistic ‘can-do-spirit’ that should be a permanent part of the site.  After using insurance money to build the structure these organizations would only be charge $1 per year rent plus expenses.  Design teams from each time zone would be commissioned to customize each of the 24 rooftop atriums.  The orientation of the circular footprint is set by the solar angle of the rising sun at dawn on September 11^th striking the tallest blue glass wall to reflect and illuminate the Statue of Liberty.  Unprecedented safety innovations provide reassurance for occupants… besides who would attack a building housing the World’s humanitarian outreach programs?