Anyone who walks by the Tower of London will notice that the grounds have changed colour. Instead of a bright green, the dry moat surrounding the tower is now a wash of red.
Nearly 120,000 ceramic poppies have been "planted" to honour soldiers who died in the First World War.
The installation, called "Blood Swept Lands and Seas of Red," was officially unveiled Tuesday. The artist aims to have 888,246 poppies installed by Armistice Day on November 11, one for every person who died fighting for Britain and its colonies in World War I.
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The Duke and Duchess of Cambridge, along with Prince Harry, visited the installation on Tuesday, stopping to "plant" some poppies.
Monday marked 100 years since Germany invaded Belgium, which started the First World War.