When Dutch architect Rem Koolhaas designed a 10-story retail boutique for Prada in San Francisco in 2001, city planners initially rejected it, saying it resembled a giant cheese grater and didn't fit in with the other buildings in the neighborhood. They were eventually overruled, but when the recession killed the project altogether, Koolhaas's design joined the crowded pool of critically praised designs that never got built. Read More...

Tags: Unfinished, resession, Buildings

The tragedy on 9/11 put a serious dent in the enthusiasm for super-tall buildings, and then economy killed what was left of that enthusiasm. Consider the Chicago Spire, which was designed to soar 2,000 feet into Chicago's airspace but never got past the foundation stage. Read More...

Tags: Trends, Buildings