Aerial view of Olympic stadium and 377ft tall ArcelorMittal Orbit observation tower, designed by Anish  Kapoor, London, UK

Aerial view of Olympic stadium and 377ft tall ArcelorMittal Orbit observation tower, designed by Anish Kapoor, London, UK

Aerial view of Olympic stadium and 377ft tall ArcelorMittal Orbit observation tower, designed by Anish  Kapoor, London, UK

Aerial view of Olympic stadium and 377ft tall ArcelorMittal Orbit observation tower, designed by Anish Kapoor, London, UK