LEGO Architecture: 2 World Trade Center
The former #2 World Trade Center building, which once stood in New York City, New York, was 1,362 ft. tall and contained 110 stories. The model is 7'0" tall and consists of 14,250 pieces, but only took 12 hours to design and 60 hours to build.
Photo of LEGO Architecture exhibit by Wally Bahny for TechRepublic
I believe the open areas are actually parking. Odd, but there's parking spaces with cars in them all around the outside of the building. Not sure how they get up there, I always assumed some sort of elevator.