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The ArcelorMittal Orbit sculpture, left, before its official unveiling at the Olympic Park, London, Friday May 11, 2012. The steel sculpture designed by Anish Kapoor and Cecil Balmond stands 114.5 meters (376ft) high, 63% of of the sculpture is recycled steel and incorporates the five Olympic rings. (AP Photo/Tim Hales)

London's Orbit tower opens

On May 11, London Olympic officials declared the completion of a centerpiece of the Queen Elizabeth Olympic Park — the Orbit, a 115-meter looped and twisting steel tower that will give visitors panoramic views. Some critics, however, have called the bright red structure an eyesore.