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Originally mounted in London in 2007, the project consists of 31 life-size anatomically correct male bodies, 27 constructed of fiberglass and four of cast iron, all cast from the body of the artist himself. which were placed on top of prominent buildings along the London's South Bank – for example the Shell Building and Waterloo Bridge. Part of Gormley's 2007 retrospective exhibition Blind Light at the Hayward Gallery, it was best viewed from the gallery's terraces.[6]The statues were occasionally mistaken as suicide attempts. The installation was taken down in August and September 2007. Gormley had previously constructed a similar project, Another Place, in Crosby Beach.
In 2010, the Event Horizon sculptures were installed in New York City at sites around Madison Square, as far downtown as Union Square and as far uptown as the Empire State Building. The 27 fiberglass figures were placed on setbacks and tops of buildings, while the four cast iron figures were on the ground in Madison Square Park. The installation was sponsored by the Madison Square Park Conservancy. The 2012 installation inSão Paulo is the same as the London design.