The plans need to please business interests alongside honouring those who died when the original twin towers collapsed.
Earlier blueprints for the site were abandoned by New Yorkers for being unimaginative and this time round, the competing companies were given more freedom with the designs.
The new outlines are all gentler shapes than the gigantic towers which weren't well received when they went up in the Sixties. One includes a floating memorial with 2,800 lights - one for every victim of the 11 September attacks.
British architect Lord Foster is a strong contender to win when the decision is made in the new year. He described his design as the tallest, greenest and safest - "Two towers which kiss and touch and become one."
What do you think of the new designs for rebuilding south Manhattan? Are they better than those unveiled earlier this year? Has anything been missed out?
To view the designs click on the link on the top right of this webpage: In pictures: World Trade Center plans.