It's like fricken deja vu all over again.

Architect David Childs unveiled the new design details of the 1,776-foot Freedom Tower Wednesday at an American Institute of Architects ceremony inside 7 World Trade Center, the skyscraper he designed that sits across from ground zero.

Some derided the windowless, 20-story concrete base that security officials sought, saying it resembled more of a bunker than an office building. Architects had originally thought that shimmering metal panels would cover the bottom of the building, but recently decided on 13-foot-high panels that combine triangular glass prisms.

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