It stood empty for more than 150 years - an empty plinth whose intended artwork was never completed.
But over the last 14 years, the fourth plinth in Trafalgar Square has hosted some of the world's most feted contemporary art.
Now its role in the arts world is being formally celebrated, in a special exhibition at the Institute of Contemporary Arts.
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The Hammers moved to the Olympic Stadium in May leaving their old site to be developed for housing.
The first officer shouted "look!" as the drone passed next to the right wing at around 11,000ft above south-east London.
They found a sheepish looking ewe with a traffic cone on her head in the middle of a field.