The Chicago Spire designed by Santiago Calatrava was poised to rise and twist 360 degrees over 150 stories near Chicago’s Navy Pier. However financial woes have almost certainly doomed the project and Chicago is left with an enormous hole just off Lake Shore Drive. Early this year the Chicago Architectural Club saw an opportunity and held a global competition, Mine the Gap, in which it posed the question: What the hell should we do with this frigging massive hole? (paraphrased) From dozens of entries the results have been announced and below are some of the more intriguing and occasionally wacky submissions. The winner is the first image, called The Second Sun. Much more detailed imagery on their site.