The Chicago Spire was a supertall skyscraper under construction in Chicago, Illinois. The building was designed by Spanish architect Santiago Calatrava and was being developed by Garrett Kelleher of Shelbourne Development Group, Inc
Originally commissioned by Christopher Carley, the building site for the project was purchased by Irish developer Garrett Kelleher in July 2006 when Carley's financing plans fell through. Construction of the building was to begin in August 2007, for intended completion in 2011. The Chicago Spire would have been the tallest building in North America. The project was canceled in early 2010.