Charles Jencks, the leading architectural critic and writer, takes on trendiness in architecture: namely the rise of the iconic building, instantly famous and distinctively recognizable structures like Norman Foster's Gherkin in London or Daniel Libeskind's Ground Zero designs in New York. Although there have always been buildings built to be instant icons such as palaces and cathedrals, Jencks sees this latest trend as being fueled by the real estate...