In this file photo of Feb. 27, 2003, architect Daniel Libeskind, center, presents his winning vision for a new World Trade Center to New York Mayor Michael Bloomberg, left, and New York Governor George Pataki at a news conference in New York. While the most symbolic pieces have started visibly taking shape in the last year, it's become increasingly clear that the grand scheme that was unveiled six years ago could take decades to be completed, if at all.