According to architect Eli Attia, Daniel Libeskind's "wedge of light" that would allow the sun to shine on the new World Trade Center memorial plaza without interruption will, it seems, be broken by shadow from the nearby Millenium Hotel. Libeskind's response, paraphrased: "Um, yeah...well, uh...that's what I meant..."
Shadows to fall, literally, over 9/11 wedge of light [NYT]