5. England Portsmouth FC Stadium
Conceived by the Swiss architectural firm of Herzog and de Meuron to replace Fratton Park, the Portsmouth FC stadium was designed to accommodate 39,000 adoring football fans. The vision was unfortunately short-lived, cancelled as were many other projects as a result of the 2008 financial crisis, and the fans now enjoy an upgraded Fratton Park instead.
6. Chicago The Chicago Spire
All that remains of developer Garrett Kelleher’s original vision for a business tower measuring two thousand feet is a hole in the ground. Designed by Calatrava, the project was perhaps too ambitious – meant to include condominums and a hotel amongst the 116 floors. After racking up a debt in excess of $100 million, Kelleher handed over the site to local developers.