Architect: Norman Foster & Partners
British architect Norman Foster, renowned for his skyscraper designs, proposed a building consisting of twinned towers that "kiss" at three points. Foster based his design on triangles, which he described as "cross-cultural symbols of harmony, wisdom, purity, unity, and strength" and he promised his towers would be "the most secure, the greenest and the tallest in the world."

Reproduced with permission of the Lower Manhattan Development Corporation.