10 Buildings that Changed America

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Why did Southdale shopping center and the relatively obscure Vanna Venturi House in Philadelphia make the cut of a top ten list of game-changing American buildings? How come San Francisco's Ghiradelli Square almost bumped the Walt Disney Concert Hall? And where was Louis Kahn's Salk Institute? These and more are questions raised by 10 Buildings that Changed America, a PBS special airing this weekend, produced and written by Dan Protess, and hosted by Geoffrey Baer.